UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36

Steps to reproduce the problem:
It's not clear the definite procedure to trigger the problem. On a Microsoft Surface Pro 4 (Skylake device), the following procedure will likely trigger the problem:
1. Open some tabs, play some videos or just open some random websites.
2. Open other applications. Chrome window is now inactive.
3. Perform tasks on other applications for a while. Go back to Chrome, the user interface might be unresponsive for a while (likely 30 seconds), then turned back to normal. If input method switch hotkey (Windows + Space) is pressed, the Window recovers immediately.

If Chrome has encountered the situation described above, it is likely to trigger another freeze soon, unless re-open Chrome.

The same issue also affects Visual Studio Code (which uses Chromium-based user interface engine).

What is the expected behavior?
The window should not randomly freeze.

What went wrong?
The window freeze. Cannot reproduce the problem on my other devices, which use Haswell-generation HD Graphics.

A trace file has been provided. The last few seconds have the problem occurred and recovered.

Did this work before? N/A 

Chrome version: 66.0.3359.139  Channel: stable
OS Version: 10.0
Flash Version: 

Not sure if related to IME, but the IME switching hotkey can mitigate the problem for a while. Then the problem will likely occur again.
 

Deleted: trace_FreezeTrace.json.gz 19.0 MB

trace_FreezeTrace.json.gz 19.0 MB Download