Any video player (Twitch, YouTube, Etc.) drops frames with 60 FPS videos and 4K videos when using any cloned or duplicated display
Reported by
maxbher...@gmail.com,
Oct 31
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Issue descriptionUserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36 Example URL: http://www.youtube.com/ Steps to reproduce the problem: 1. Duplicate or clone a display. 2. Go to YouTube and watch any 4K or 60 FPS video (or 4K 60FPS video) 3. Right click, click stats for nerds 4. Fullscreen Chrome. You will see the frames start to drop massively. 5. I have found that keeping the mouse still mitigates the issue but if you are moving the mouse the issue is very prevalent. 6. The issue does not appear to be present when playing any of these types of videos in a windowed version (not fullscreen). 7. I have since tested this on 3 entirely different computers and have yielded the same result from all. What is the expected behavior? Not dropping frames in HTML5 Video players, should be a smooth playback What went wrong? Chrome (or Chromium) does not like duplicating any display on the entire OS. If ANY display is duplicated the issue follows the entire OS. If you duplicate a monitor and try to play on any monitor that is not cloned the issue will still happen. If you play a video on the iGPU with a both duplicated displays on a dGPU the issue is still present. Disabling Hardware Decoding does indeed fix this problem however, an iGPU is not nearly powerful enough and this is not what the expected behavior should be. Did this work before? No Is it a problem with Flash or HTML5? HTML5 Does this work in other browsers? Yes Chrome version: 70.0.3538.77 Channel: stable OS Version: 10.0 Flash Version: Contents of chrome://gpu: Graphics Feature Status Canvas: Hardware accelerated Flash: Hardware accelerated Flash Stage3D: Hardware accelerated Flash Stage3D Baseline profile: Hardware accelerated Compositing: Hardware accelerated Multiple Raster Threads: Enabled Native GpuMemoryBuffers: Software only. Hardware acceleration disabled Out-of-process Rasterization: Disabled Hardware Protected Video Decode: Unavailable Rasterization: Hardware accelerated Skia Deferred Display List: Disabled Skia Renderer: Disabled Surface Synchronization: Enabled Video Decode: Hardware accelerated Viz Service Display Compositor: Disabled WebGL: Hardware accelerated WebGL2: Hardware accelerated Driver Bug Workarounds clear_uniforms_before_first_program_use decode_encode_srgb_for_generatemipmap disable_delayed_copy_nv12 disable_discard_framebuffer disable_framebuffer_cmaa exit_on_context_lost force_cube_complete scalarize_vec_and_mat_constructor_args disabled_extension_GL_KHR_blend_equation_advanced disabled_extension_GL_KHR_blend_equation_advanced_coherent Problems Detected Protected video decoding with swap chain is for Windows and Intel only Disabled Features: protected_video_decode Some drivers are unable to reset the D3D device in the GPU process sandbox Applied Workarounds: exit_on_context_lost Clear uniforms before first program use on all platforms: 124764, 349137 Applied Workarounds: clear_uniforms_before_first_program_use Always rewrite vec/mat constructors to be consistent: 398694 Applied Workarounds: scalarize_vec_and_mat_constructor_args ANGLE crash on glReadPixels from incomplete cube map texture: 518889 Applied Workarounds: force_cube_complete Framebuffer discarding can hurt performance on non-tilers: 570897 Applied Workarounds: disable_discard_framebuffer Use GL_INTEL_framebuffer_CMAA on ChromeOS: 535198 Applied Workarounds: disable_framebuffer_cmaa Disable KHR_blend_equation_advanced until cc shaders are updated: 661715 Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent) Decode and Encode before generateMipmap for srgb format textures on Windows: 634519 Applied Workarounds: decode_encode_srgb_for_generatemipmap Delayed copy NV12 displays incorrect colors on NVIDIA drivers.: 728670 Applied Workarounds: disable_delayed_copy_nv12 Native GpuMemoryBuffers have been disabled, either via about:flags or command line. Disabled Features: native_gpu_memory_buffers Viz service display compositor is not enabled by default. Disabled Features: viz_display_compositor Skia renderer is not used by default. Disabled Features: skia_renderer Skia deferred display list is not used by default. Disabled Features: skia_deferred_display_list Version Information Data exported 2018-10-31T01:40:06.682Z Chrome version Chrome/70.0.3538.77 Operating system Windows NT 10.0.17134 Software rendering list URL https://chromium.googlesource.com/chromium/src/+/0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9/gpu/config/software_rendering_list.json Driver bug list URL https://chromium.googlesource.com/chromium/src/+/0f6ce0b0cd63a12cb4eccea3637b1bc9a29148d9/gpu/config/gpu_driver_bug_list.json ANGLE commit id 05c729f336ef 2D graphics backend Skia/70 193565807f7fd2a2c14e21b44c545cc03ebe134f- Command Line "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --flag-switches-begin --enable-gpu-rasterization --show-autofill-signatures --enable-zero-copy --disable-features=MarkHttpAs --flag-switches-end Driver Information Initialization time 378 In-process GPU false Passthrough Command Decoder false Sandboxed true GPU0 VENDOR = 0x10de, DEVICE= 0x1b06 *ACTIVE* GPU1 VENDOR = 0x8086, DEVICE= 0x3e92 Optimus false AMD switchable false Desktop compositing Aero Glass Direct Composition true Supports overlays false Overlay capabilities Diagonal Monitor Size of \\.\DISPLAY1 34.0" Diagonal Monitor Size of \\.\DISPLAY2 23.7" Diagonal Monitor Size of \\.\DISPLAY1 27.8" Diagonal Monitor Size of \\.\DISPLAY3 23.7" Driver D3D12 feature level D3D 12.1 Driver Vulkan API version Vulkan API 1.1.0 Driver vendor NVIDIA Driver version 416.34 Driver date 10-10-2018 GPU CUDA compute capability major version 6 Pixel shader version 5.0 Vertex shader version 5.0 Max. MSAA samples 8 Machine model name Machine model version GL_VENDOR Google Inc. GL_RENDERER ANGLE (NVIDIA GeForce GTX 1080 Ti Direct3D11 vs_5_0 ps_5_0) GL_VERSION OpenGL ES 2.0 (ANGLE 2.1.0.05c729f336ef) GL_EXTENSIONS GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture Disabled Extensions GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent Disabled WebGL Extensions Window system binding vendor Google Inc. (adapter LUID: 00000000000116b4) Window system binding version 1.4 (ANGLE 2.1.0.05c729f336ef) Window system binding extensions EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled Direct rendering Yes Reset notification strategy 0x8252 GPU process crash count 0 Compositor Information Tile Update Mode Zero-copy Partial Raster Enabled GpuMemoryBuffers Status ATC Software only ATCIA Software only DXT1 Software only DXT5 Software only ETC1 Software only R_8 Software only R_16 Software only RG_88 Software only BGR_565 Software only RGBA_4444 Software only RGBX_8888 GPU_READ, SCANOUT RGBA_8888 GPU_READ, SCANOUT BGRX_8888 Software only BGRX_1010102 Software only RGBX_1010102 Software only BGRA_8888 Software only RGBA_F16 Software only YVU_420 Software only YUV_420_BIPLANAR Software only UYVY_422 Software only Display(s) Information Info Display[2528732444] bounds=[0,0 3440x1440], workarea=[0,0 3440x1400], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Info Display[2779098405] bounds=[-1920,132 1920x1080], workarea=[-1920,132 1920x1040], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Info Display[2841568472] bounds=[3440,165 1920x1080], workarea=[3440,165 1920x1040], scale=1, external. Color space information {primaries:BT709, transfer:IEC61966_2_1, matrix:RGB, range:FULL} Bits per color component 8 Bits per pixel 24 Video Acceleration Information Decode h264 baseline up to 4096x2304 pixels Decode h264 baseline up to 2304x4096 pixels Decode h264 main up to 4096x2304 pixels Decode h264 main up to 2304x4096 pixels Decode h264 high up to 4096x2304 pixels Decode h264 high up to 2304x4096 pixels Decode vp8 up to 7680x4320 pixels Decode vp8 up to 4320x7680 pixels Decode vp9 profile0 up to 7680x4320 pixels Decode vp9 profile0 up to 4320x7680 pixels Decode vp9 profile1 up to 7680x4320 pixels Decode vp9 profile1 up to 4320x7680 pixels Decode vp9 profile2 up to 7680x4320 pixels Decode vp9 profile2 up to 4320x7680 pixels Decode vp9 profile3 up to 7680x4320 pixels Decode vp9 profile3 up to 4320x7680 pixels Encode h264 baseline up to 3840x2176 pixels and/or 30.000 fps Encode h264 main up to 3840x2176 pixels and/or 30.000 fps Encode h264 high up to 3840x2176 pixels and/or 30.000 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bDriverSignedValid false bNoHardware false dwBpp 32 dwDDIVersion 12 dwHeight 1080 dwRefreshRate 74 dwWHQLLevel 0 dwWidth 1920 iAdapter 1 lDriverSize 957968 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType GeForce GTX 1080 Ti szD3DStatusEnglish Enabled szD3DStatusLocalized Enabled szDACType Integrated RAMDAC szDDIVersionEnglish 12 szDDIVersionLocalized 12 szDDStatusEnglish Enabled szDDStatusLocalized Enabled szDXVAHDEnglish Supported szDXVAModes szDescription NVIDIA GeForce GTX 1080 Ti szDeviceId 0x1B06 szDeviceIdentifier {D7B71E3E-5846-11CF-905D-98461BC2D435} szDeviceName \\.\DISPLAY2 szDisplayMemoryEnglish 27439 MB szDisplayMemoryLocalized 27439 MB szDisplayModeEnglish 1920 x 1080 (32 bit) (74Hz) szDisplayModeLocalized 1920 x 1080 (32 bit) (74Hz) szDriverAssemblyVersion 25.21.14.1634 szDriverAttributes Final Retail szDriverDateEnglish 10/9/2018 7:00:00 PM szDriverDateLocalized 10/9/2018 19:00:00 szDriverLanguageEnglish English szDriverLanguageLocalized English szDriverModelEnglish WDDM 2.4 szDriverModelLocalized WDDM 2.4 szDriverName C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll szDriverNodeStrongName oem49.inf:0f066de35d9aeff6:Section108:25.21.14.1634:pci\ven_10de&dev_1b06 szDriverSignDate Unknown szDriverVersion 25.21.0014.1634 szKeyDeviceID Enum\PCI\VEN_10DE&DEV_1B06&SUBSYS_66963842&REV_A1 szKeyDeviceKey \Registry\Machine\System\CurrentControlSet\Control\Video\{0794A6B5-CD10-11E8-BBE0-646E69789438}\0001 szManufacturer NVIDIA szMiniVdd unknown szMiniVddDateEnglish Unknown szMiniVddDateLocalized unknown szMonitorMaxRes Unknown szMonitorName Generic PnP Monitor szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Supported szRankOfInstalledDriver 00D12001 szRegHelpText Unknown szRevision Unknown szRevisionId 0x00A1 szSubSysId 0x66963842 szTestResultD3D7English Not run szTestResultD3D7Localized Not run szTestResultD3D8English Not run szTestResultD3D8Localized Not run szTestResultD3D9English Not run szTestResultD3D9Localized Not run szTestResultDDEnglish Not run szTestResultDDLocalized Not run szVdd unknown szVendorId 0x10DE 2 b3DAccelerationEnabled true b3DAccelerationExists true bAGPEnabled true bAGPExistenceValid true bAGPExists true bCanRenderWindow true bDDAccelerationEnabled true bDriverBeta false bDriverDebug false bDriverSigned false bDriverSignedValid false bNoHardware false dwBpp 32 dwDDIVersion 12 dwHeight 1080 dwRefreshRate 74 dwWHQLLevel 0 dwWidth 1920 iAdapter 2 lDriverSize 957968 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType GeForce GTX 1080 Ti szD3DStatusEnglish Enabled szD3DStatusLocalized 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C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_a5e9eb9bc021c27a\nvldumdx.dll szDriverNodeStrongName oem49.inf:0f066de35d9aeff6:Section108:25.21.14.1634:pci\ven_10de&dev_1b06 szDriverSignDate Unknown szDriverVersion 25.21.0014.1634 szKeyDeviceID Enum\PCI\VEN_10DE&DEV_1B06&SUBSYS_66963842&REV_A1 szKeyDeviceKey \Registry\Machine\System\CurrentControlSet\Control\Video\{0794A6B5-CD10-11E8-BBE0-646E69789438}\0002 szManufacturer NVIDIA szMiniVdd unknown szMiniVddDateEnglish Unknown szMiniVddDateLocalized unknown szMonitorMaxRes Unknown szMonitorName Generic PnP Monitor szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Supported szRankOfInstalledDriver 00D12001 szRegHelpText Unknown szRevision Unknown szRevisionId 0x00A1 szSubSysId 0x66963842 szTestResultD3D7English Not run szTestResultD3D7Localized Not run szTestResultD3D8English Not run szTestResultD3D8Localized Not run szTestResultD3D9English Not run szTestResultD3D9Localized Not run szTestResultDDEnglish Not run szTestResultDDLocalized Not run szVdd unknown szVendorId 0x10DE 3 b3DAccelerationEnabled true b3DAccelerationExists true bAGPEnabled true bAGPExistenceValid false bAGPExists false bCanRenderWindow false bDDAccelerationEnabled true bDriverBeta false bDriverDebug false bDriverSigned false bDriverSignedValid false bNoHardware false dwBpp 0 dwDDIVersion 12 dwHeight 0 dwRefreshRate 0 dwWHQLLevel 0 dwWidth 0 iAdapter 0 lDriverSize 2381056 lMiniVddSize 0 szAGPStatusEnglish Enabled szAGPStatusLocalized Enabled szChipType Intel(R) UHD Graphics Family szD3DStatusEnglish Enabled szD3DStatusLocalized Enabled szDACType Internal szDDIVersionEnglish 12 szDDIVersionLocalized 12 szDDStatusEnglish Enabled szDDStatusLocalized Enabled szDXVAHDEnglish Unknown szDXVAModes Unknown szDescription Intel(R) UHD Graphics 630 szDeviceId 0x3E92 szDeviceIdentifier Unknown szDeviceName Unknown szDisplayMemoryEnglish 16440 MB szDisplayMemoryLocalized 16440 MB szDisplayModeEnglish Unknown szDisplayModeLocalized unknown szDriverAssemblyVersion 25.20.100.6326 szDriverAttributes Final Retail szDriverDateEnglish 9/30/2018 7:00:00 PM szDriverDateLocalized 9/30/2018 19:00:00 szDriverLanguageEnglish English szDriverLanguageLocalized English szDriverModelEnglish WDDM 2.4 szDriverModelLocalized WDDM 2.4 szDriverName C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_c4f600ffe34acc7b\igdumdim64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_c4f600ffe34acc7b\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_c4f600ffe34acc7b\igd10iumd64.dll,C:\WINDOWS\System32\DriverStore\FileRepository\igdlh64.inf_amd64_c4f600ffe34acc7b\igd12umd64.dll szDriverNodeStrongName oem15.inf:5f63e5340f714335:iCFL_w10_DS:25.20.100.6326:pci\ven_8086&dev_3e92 szDriverSignDate Unknown szDriverVersion 25.20.0100.6326 szKeyDeviceID Enum\PCI\VEN_8086&DEV_3E92&SUBSYS_872F1043&REV_00 szKeyDeviceKey Unknown szManufacturer Intel Corporation szMiniVdd unknown szMiniVddDateEnglish Unknown szMiniVddDateLocalized unknown szMonitorMaxRes Unknown szMonitorName Unknown szNotesEnglish No problems found. szNotesLocalized No problems found. szOverlayEnglish Unknown szRankOfInstalledDriver 00D12001 szRegHelpText Unknown szRevision Unknown szRevisionId 0x0000 szSubSysId 0x872F1043 szTestResultD3D7English Not run szTestResultD3D7Localized Not run szTestResultD3D8English Not run szTestResultD3D8Localized Not run szTestResultD3D9English Not run szTestResultD3D9Localized Not run szTestResultDDEnglish Not run szTestResultDDLocalized Not run szVdd unknown szVendorId 0x8086 Log Messages GpuProcessHostUIShim: GpuProcessHostUIShim: I would love to help in any way I can. To help reproduce the issue and help find the related bug. Please, if you have any other questions or tests you would like to me to try, please contact me by my Email at MaxBHerman@Gmail.com I did not happen to see a form for an Email address so I am putting it here and hope to get a response back so that I may help with fixing this bug.
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Oct 31
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Oct 31
Can you try running with --disable_direct_composition=1 and/or --disable_delayed_copy_nv12=0 command line flags?
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Oct 31
Just tried enabling both of those flags through the properties tab of windows in the target box, I tried each one separately and together. Did not notice any difference, YouTube still drops frames like crazy when doing a 4K, 60 FPS or 4K 60 FPS video.
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Oct 31
Thanks for trying those flags. Can you please capture a trace as described here: https://www.chromium.org/developers/how-tos/trace-event-profiling-tool/recording-tracing-runs Please select the "Javascript and Rendering" categories in tracing options, and only record when you see the problem, and stop recording after a reasonable duration (if you record for too long older events get discarded).
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Oct 31
Here is that trace, took me a couple of times to get it because it fills up REALLY quick, but I was able to capture it. I have attached it.
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Oct 31
Thanks for the trace. The trace indicates that your primary monitor has a refresh rate of 100Hz. Is that correct? Do both of the duplicated monitors support this refresh rate? Can you try Chrome Canary just in case the recent disabling of direct composition fixed this? If it isn't fixed with Canary, please record another trace on Canary with no other sites opened, and a fresh profile (either don't sync your Chrome profile or run with --user-data-dir=<some directory>)? Please include the "Javascript and Rendering" categories, and also the media category from "Edit categories". Tracing is circular so don't worry about it reaching 100%. Investigation notes: The renderer main thread seems to be producing tile updates every frame, which drives the display compositor. At about 6.1s into the trace, Present starts to block for 20ms or so at a time (sometimes 28ms too).
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Oct 31
Just downloaded canary fresh and did not sign in or anything, the issue does not seem to be present in the current Canary build. And as per your question, yes my monitor is 3440x1440 @ 100 Hz and the cloned display is the exact same resolution and refresh rate. I have attached a trace of the current Canary build.
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Oct 31
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Oct 31
Thanks for confirming that it's fixed on Canary. You'll be able to reproduce it on Canary if you pass in --enable-direct-composition-layers flag. I'm pretty sure it's related to direct composition composing at a different rate than DWM (60Hz vs 100Hz probably), but disabling it doesn't fix the bug in M70 because we still use a composition swap chain in ANGLE which also seems to be bound by composition rate. New trace shows Present calls blocking for about 7ms which is less than the vsync interval of 10ms.
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Oct 31
Well at least it is fixed in Canary, then I can switch back to Chrome. When do you think this fix will make it's way to the Chrome stable channel?
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Oct 31
The fix will be in M72 which will be released to beta in mid December, and stable in late January 2019. You can also find the fix in Chrome dev channel (updated weekly) if you don't want to run Canary (updated nightly), but it will have bugs occasionally. I'm closing this bug as WontFix, but I've filed issue 900738 to track the work to make this better in other cases.
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Oct 31
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Comment 1 by krajshree@chromium.org
, Oct 31