Tormented Souls Demo (1652610)

I tried running the demo to Tormented Souls using Proton but just get a weird coloured screen when trying to start a game. I was unable to get the PROTON_LOG=1 %command% to produce a log file but I used "&> log.txt" and got a crude log file:

log.txt

Here is a screenshot of the coloured screen:

I'm guessing some video codec issue but i'm unsure. I noticed in that log file that it mentioned Fsync was running but adding the command "PROTON_NO_FSYNC=1 %command%" didn't solve the issue. I also tried using Proton Experimental instead of 6.3-7 but the issue remained.

I have checked whether there are updates for my system available and I am up to date

System Information:

Distro: Manjaro

GPU: RX 580 8GB

Driver/LLVM version: Mesa 21.2.3/12.0.1

Kernel version: 5.14.10-1-MANJARO

Proton version: 6.3-7

https://gist.github.com/Simmonz/54a59be6982271294f5e68a6fa867674

Start by reproducing the Tormented Souls Demo launch with Proton 6.3-7 and Proton Experimental, then inspect the attached log.txt and the linked system gist. Compare the coloured-screen failure with the reported Fsync and video-codec clues; done means the demo starts a game without the coloured screen and the cause or required compatibility change is verified.