UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Steps to reproduce the problem:
1. Open the test case provide on chrome 62
2. Open the test case provide on chrome 63
3. Notice the FPS regression

What is the expected behavior?
FPS should not have regressed

What went wrong?
has regressed

Did this work before? Yes Chrome 62

Does this work in other browsers? N/A

Chrome version: 63.0.3239.132  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

Data to reproduce have been shared with Kenneth Russel, but are too big to be attached to the bug report