protonscr

Assassin's Creed Unity shadow flicker

dxvkclosed d3d11needs feedbackwindowsamd proprietary
doitsujin/dxvk#5369 · opened 2025-12-07 by VanitasFR · updated 2026-06-07 · 4 comments · github
VVanitasFR 2025-12-07 github

Please describe your issue as accurately as possible. Include screenshots or videos when relevant.

Whenever playing ACU with DXVK, the lights or shadows will start flickering like crazy, you just need to add dxvk and play the game to reproduce

If you use Windows, please check the following page: https://github.com/doitsujin/dxvk/wiki/Windows

Software information

Assassin's Creed Unity, playing at 4k ultra downscaled to 1080 without anti aliasing

System information

  • GPU: 9070XT
  • Driver: 25.11.1
  • Wine version:
  • DXVK version: 2.7.1

Apitrace file(s)

For instructions on how to use apitrace, see:

ACU_d3d11.log
ACU_dxgi.log

Log files

Please attach Proton or Wine logs as a text file:

  • When using Proton, set the Steam launch options for your game to PROTON_LOG=1 %command% and attach the corresponding steam-xxxxx.log file in your home directory.
  • When using regular Wine, use wine game.exe > game.log 2>&1 and attach the resulting game.log file.
  • On Windows, log files will usually appear next to the games exe or in its base folder.

https://github.com/user-attachments/assets/d4107dbb-530b-4230-bf8d-c03a2b4fb8e5

Ddoitsujin maintainer 2025-12-07 github

Works fine on Linux as usual. Kinda getting tired of these problems with AMD's Windows driver that don't really reproduce anywhere else, impossible to tell whether any of these are genuine bugs on our end or just driver memes.

Vvturcotte 2025-12-07 github

@VanitasFR I have a similar issue with AC Origins here #5356 , can't say if it's shadows tho. You might try with DXVK v2.5.3 or downgrade Radeon drivers to v25.9.1 and see if it's related.

VVanitasFR 2025-12-08 github

DXVK 2.5.3 works as intended like @vturcotte mentionned, using Adrenalin 25.11.1

BBlisto91 2026-05-17 github

@VanitasFR Can you retest this with the latest amd driver? I am not reproducing on 26.5.2 with a 7900 XTX.

Launch options