You can also just flip the pref `gfx.webrender.force-disabled` to `true` in your prefs file to avoid recompiling.
Bug 1714064 Comment 3 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
You can also just flip the pref `gfx.webrender.force-disabled` to `true` in your prefs file to avoid recompiling. While I expect this pref to go away this year, it won't be before the next ESR ships.