I'd suggest to disable webRTC and webGL (unrelated to this particular issue but still) in the browser for fingerprinting reasons alone.
e.g. firefox > about:config:
* media.peerconnection.enabled false
* webgl.disabled true
e.g. firefox > about:config:
* media.peerconnection.enabled false
* webgl.disabled true
If browser games were a usecase of mine, then I'd keep my safe "daily driver" Firefox for surfing the WWW with the mentioned restrictions in place. I'd use a separate Chrome browser as a "game client".