I had forgotten this was a recent change in Chrome. From the Help Center : August '22 Update: As of August 2022, new updates in Chrome have changed how WebGL functions. This has impacted how Roll20 works with Chrome, and we are still configuring the extent of these changes. If you’re having problems loading your game or accessing Dynamic lighting, please reach out to us via the Help Center! If the lag gets bad enough to require dev intervention, you can grab a Console Log ( Chrome , Firefox ) before filing a Help Center Request . That might help them diagnose the issue, though it sounds like they are working to resolve it already.