protonscr

Dirt Rally 2.0 maxes out VRAM on alt-tab

dxvkclosed dxgi
doitsujin/dxvk#4522 · opened 2024-12-12 by netborg-afps · updated 2025-11-23 · 4 comments · github
Nnetborg-afps 2024-12-12 github

When tabbing out the second time, the game consumes all VRAM it can acquire on my RTX 3080 10 GB (shown by nvidia-smi). This also leads to my X11 Gnome desktop to start lagging and behaving erroneous. @gofman This bug is a regression from #2675.

Additionally, since this VRAM bug, the host will quickly run out of memory too when debugging via VK_INSTANCE_LAYERS=VK_LAYER_KHRONOS_validation.

steam-690790_alt_tab.log

KK0bin maintainer 2024-12-12 github

How much VRAM does the game use normally? Are we talking about a small increase in VRAM when you alt-tab or does it 'explode'?

Nnetborg-afps 2024-12-12 github

It goes from 3 GB to 9 GB, don't know if it would allocate more VRAM if it could.

TTrevonn 2024-12-15 github

Can't replicate this on AMD. The game sits at a steady 3.8GB on high settings 1080p

Kernel : 6.12.4-arch1-1-tsc
CPU : AMD Ryzen 5 5600H with Radeon Graphics
GPU : AMD Radeon RX 6600M (RADV NAVI23)
Mesa : 24.3.1
RAM : 29 GB
VRAM : 8192 MB
Proton Version : experimental-9.0-20241206

Nnetborg-afps 2025-11-23 github

I don't know what exactly fixed this, but it's no longer an issue with dxvk 2.7.1 and up-to-date system. Works fine now.

Nothing extracted yet.