Affected versions

• 80.0b4, 81.0a1 (2020-08-06)

Affected platforms

• Windows 10, macOS 10.15.5;

Steps to reproduce

1. Launch Firefox and access https://battle.wazana.io/
2. Try to play the game;

• pick faction, scroll @map to find rectangles on which to pick your position, after that press Start so the game starts up;

Expected result

• game is playable;

Actual result

• go make yourself a coffee, read the news because the loading times are horrible;

Regression range

• will check and provide info asap;

Additional notes

• suggested severity is S4 due to this not being the most popular link/game/website.

Looks like canvas issue. Windows10+Intel HD 5500 mobile iGPU
Without remote canvas: https://share.firefox.dev/2PyY2Hg

Perf is still bad with remote canvas

Chrome is quite smooth on this

Jeff, is this known?

The game uses fillText and strokeText while the canvas shadow properties are set. So we construct an intermediate DrawTarget to apply the shadow, on every call to fillText/strokeText.

Does "depends on bug 1560450" mean, the regressing bug is bug 1468801 ?

Probably, but it's not a useful dependency for us here. Bug 1560450 is the core "there was a regression" bug. Most of these bugs could be duped to 1560450, but I want to keep them distinct for now.

In an attempt to get the regression range, I've noticed a huge improvement in the usability of the game/site.
As reference, the same load timers are on 67.0a1 (2019-03-03) and 78.0a1 (2020-09-20) are similar to other browsers such as Chrome.