[ncmncm]

Here's hoping it is easy to switch off. Firefox has become extremely crashy, running under Qubes, where the GPU is forbidden, despite my turning off attempts at shader use everywhere I can find. E.g., even turning off "smooth scrolling" made a substantial difference. But it still crashes, even just loading a DDG search results page.

Advice welcome. (No, abandoning Qubes is not an option.)

[yoasif_]

Mozregression - https://mozilla.github.io/mozregression/ should help you figure out where it broke. You can open a bug with the commit you found as "regressed by" - https://wiki.mozilla.org/BMO/UserGuide/BugFields#regressed_b... to help developers track down how what they need to change to resolve the issue.