Solved: B41 + Linux + nvidia 3090, really low-FPS in-game. GPU not being used? | Project Zomboid | Page 1

orchid bone Mar 30, 2026, 8:23 PM

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I'm getting single-digit FPS in both native and compatibility modes (and in compatibility mode there are additional graphical issues).

I've upped allocated RAM to 8GB.

Interestingly, from ~~my resource monitor (I don't remember if it is Mango HUD or something else)~~ the Steam performance monitor, it seems like the menu screen utilizes the GPU, but when I jump in-game, the CPU spikes to 90+% and the GPU drops to 0-2%.

My rig has no integrated GPU, so it must be running 100% on CPU. Anyone know how to make PZ use the GPU?

rough solstice Mar 30, 2026, 9:16 PM

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Wrote on your Reddit thread, need a recording + logs

orchid bone Mar 30, 2026, 9:44 PM

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Thanks @rough solstice , sorry for spamming in two places. I sent you logs/recording on Reddit.

rough solstice Mar 31, 2026, 10:19 AM

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Responded there since I have forgotten you also made a post here, we can continue the discussion here if that is preferable?

orchid bone Apr 5, 2026, 4:21 AM

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Figured out the issue. XWAYLAND_NO_GLAMOR was on system-wide.

#Solved: B41 + Linux + nvidia 3090, really low-FPS in-game. GPU not being used?