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Choppy scrolling on Macbook Pro 15
Reported by
pierbove...@gmail.com,
Dec 27 2016
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2964.0 Safari/537.36 Example URL: https://microsoft.github.io/code-push/ Steps to reproduce the problem: 1. Go to https://microsoft.github.io/code-push/ 2. Scroll 3. Choppy scrolling What is the expected behavior? Smooth scrolling What went wrong? On certain websites scrolling becomes very choppy. This happens on a 15'' MBP with Sierra but not on much less powerful 13'' MBP with El Capitan, or even older 15'' models with Sierra (I've compared with co-workers). Here is a video comparing the 15'' and the 13'' where the problem is evident. https://www.youtube.com/watch?v=4e3KXvTCUdg The problem is constant but here are some URLS where the problem is really apparent: https://microsoft.github.io/code-push/ https://play.google.com/music/listen https://photos.google.com/ I've tried Chrome public channel and Canary and also disabled all extensions with the same results. I've also tried changing some flags with the same result. - Override software rendering list - Display list 2D canvas I've attached a trace. Does it occur on multiple sites: N/A Is it a problem with a plugin? N/A Did this work before? N/A Does this work in other browsers? N/A Chrome version: 57.0.2964.0 Channel: canary OS Version: OS X 10.12.2 Flash Version: Shockwave Flash 24.0 r0
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Dec 27 2016
Can you take a trace for us? Ideally you could take one on the machine where scrolling is smooth, and one on the machine where scrolling is not smooth: https://www.chromium.org/developers/how-tos/submitting-a-performance-bug Not sure if this is a compositing issue or a blink>scroll issues.
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Dec 27 2016
I tried Opera that also uses Blink with the same result. Firefox and Safari have no problems at smooth scrolling a simple page like: https://microsoft.github.io/code-push/
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Dec 27 2016
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Dec 27 2016
Hey Eric there's a trace attached on my first post. I will trace on a machine that works fine.
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Dec 27 2016
Here's a trace of the 13'' MBP were scrolling is smooth.
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Dec 27 2016
Here is a trace of a 2012 15'' MBP where scrolling is smooth.
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Dec 28 2016
I logged in with Guest user and the problem was gone so it was something in my macOS installation. Since this was a new machine with Sierra I formatted the machine and installed El Capitan. So far so good. Scrolling worked perfectly in Safari and Firefox though. If I ever find out what was causing this I will update this.
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Dec 29 2016
After installing El Capitan the scrolling issue hasn't presented itself so I'm guessing this is Sierra problem. Please close this.
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Jan 5 2017
Alright. I also tested on a similar Mac Pro and I didn't see the issue either. Thanks for reporting. Let us know if this happens again. |
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Comment 1 by pierbove...@gmail.com
, Dec 27 2016