stutter in Firefox Webrender when scrolling with mouse wheel
Hello, I've noticed jumpy scrolling when scrolling with the mouse wheel (not autoscroll) in Firefox 80 (Webrender enabled). This is with recent kwinft git-master build, recent mesa git-master (RX 480) and Xorg 1.20.9. This stutter is not there with kwin-lowlatency. It really seems to be related to that specific scroll events, as www.vsynctester.com is completely free of stutter.
Some weeks ago testing with that site, I noticed irregular intermediate stutter with Nvidia though (kwin-lowlatency was smooth). Someone wanna recheck?