I got it again now with $HOME/.config/environment.d/debug.conf :
MUTTER_DEBUG_DISABLE_TRIPLE_BUFFERING=1 MUTTER_DEBUG_FORCE_KMS_MODE=simple
Of course, all the triple buffering patches are still there. Haven't tried vanilla mutter/gnome-shell yet.
I got it again now with config/ environment. d/debug. conf :
$HOME/.
MUTTER_ DEBUG_DISABLE_ TRIPLE_ BUFFERING= 1 DEBUG_FORCE_ KMS_MODE= simple
MUTTER_
Of course, all the triple buffering patches are still there. Haven't tried vanilla mutter/gnome-shell yet.