slow/choppy rendering on slither.io on cr69 build

[LaurenWags]

Description

Testing slither.io on 0.23.203 is slow/choppy on screen as compared to prod build 0.23.105.

Steps to Reproduce

1. Launch 0.23.203.
2. Navigate to slither.io and play for a minute.

Actual result:
Screen seems slow to catch up/choppy.

Expected result:
Should be smooth as on 0.23.105.

Reproduces how often:
easily

Brave Version

about:brave info:

Brave: 0.23.203
V8: 6.9.427.18
rev: 16c2c19
Muon: 8.1.2
OS Release: 16.7.0
Update Channel: Beta
OS Architecture: x64
OS Platform: macOS
Node.js: 7.9.0
Tor: 0.3.3.8 (git-99f9816efa08ab83)
Brave Sync: v1.4.2
libchromiumcontent: 69.0.3497.72

Reproducible on current live release:
no

Additional Information

reproduced on macOS by @kjozwiak

[bridiver]

did you check against Chrome 69 beta?

[LaurenWags]

good call @bridiver - I'm seeing the same on Chrome Beta. @kjozwiak can you confirm if you do as well?

[kjozwiak]

Seeing the same thing under Chrome using 69.0.3497.81. Before I updated, I checked slither.io with C68 and it worked as expected. Once Chrome was updated to 69.0.3497.81, I noticed the same janky behaviour that 0.23.203 is experiencing. Looks like we inherited this issue from Chromium.

@bridiver should we just close this off as Chrome 69.0.3497.81 is also affected?

[bridiver]

Yes, but can you file an upstream issue? Hopefully they will fix before the final 69 release

[kjozwiak]

@bridiver looks like this made it into 69.0.3497.81 which was just pushed into the stable channel a few hours ago. I created the following upstream issue:

https://bugs.chromium.org/p/chromium/issues/detail?id=880620

Closing off this issue as discussed on Slack. 👍

[kjozwiak]

It looks like there was a regression with the canvas performance which is being fixed in https://bugs.chromium.org/p/chromium/issues/detail?id=872117.

[LaurenWags]

Verified with macOS 10.12.6 using

• 0.23.205 81396b3
• Muon 8.1.4
• libchromiumcontent 69.0.3497.92

Verified on Ubuntu 17.10 x64

• 0.23.205 81396b3
• Muon 8.1.4
• libchromiumcontent 69.0.3497.92

Verified on Windows 10 x64 using

• 0.23.205 81396b3
• Muon 8.1.4
• libchromiumcontent 69.0.3497.92
• Reached best score of 700 🥇