For lunar, please try MUTTER_DEBUG_TRIPLE_BUFFERING=never although I
don't expect that's the issue. Assuming that's not the issue, please
also try MUTTER_DEBUG=kms and then monitor the posting method with:
journalctl -f /usr/bin/gnome-shell | grep Posting
or collect it afterwards:
journalctl -b0 /usr/bin/gnome-shell | grep Posting > journal.txt
and attach the results here.
Separately, another setting to try is: CLUTTER_PAINT=disable-dynamic-
max-render-time
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2016990
Title:
[Lunar] Irregular FPS with Path of Exile
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