[Death Stranding 2] Instant crash when enabling ray tracing specifically in gamescope-session

[Riebeck-one]

When launching Death Stranding 2 in steam specifically from gamescope-session with the following workaround (necessary to enable RT) :

DXVK_CONFIG='dxgi.hideAmdGpu = True;' %command%

Enabling ray tracing causes an instant game crash.

This issue occurs only in Death Stranding 2 with this DXVK_CONFIG workaround and when enabling RT inside gamescope-session. Death Stranding 2 itself works in other contexts:

• Desktop mode: Death Stranding 2 runs fine, ray tracing works without crash
• Embedded gamescope (launched manually via script in a new TTY): Death Stranding 2 runs fine, ray tracing works without crash
• Gamescope-session : Death Stranding 2 crashes when enabling ray tracing
• Other games on gamescope-session: work correctly

The script I use to start gamescope embedded in a new TTY :

#!/bin/sh

export PROTON_XESS_UPGRADE=1
export PROTON_FSR4_RDNA3_UPGRADE=4.1.0
export PROTON_USE_WOW64=1

pgrep -x steam >/dev/null && steam -shutdown

gamescope -f -e -O DP-1 -W 5120 -H 1440 -r 70 --xwayland-count 2 --hdr-enabled --hdr-itm-enabled --hdr-sdr-content-nits 250 --sdr-gamut-wideness 1 --adaptive-sync -- steam -gamepadui -pipewire-dmabuf

Below are two logs, the first one when running DS2 from desktop, in which it doesn't crash, and the second one when running DS2 inside gamescope-session, in which it crashes.
DS2 started from desktop (working).log
DS2 started from gamescope-session (crash).log

Other informations :

     -`                     david@archlinux
                 .o+`                    ---------------
                `ooo/                    OS: Arch Linux x86_64
               `+oooo:                   Kernel: Linux 6.19.12-1-cachyos
              `+oooooo:                  Uptime: 9 mins
              -+oooooo+:                 Packages: 1541 (pacman), 6 (flatpak)
            `/:-:++oooo+:                Shell: fish 4.6.0
           `/++++/+++++++:               Display (): 1920x1080 in 16", 60 Hz [External]
          `/++++++++++++++:              Display (LS49AG95): 5120x1440 in 49", 240 Hz [External, HDR] *
         `/+++ooooooooooooo/`            DE: KDE Plasma 6.6.4
        ./ooosssso++osssssso+`           WM: KWin (Wayland)
       .oossssso-````/ossssss+`          WM Theme: Breeze
      -osssssso.      :ssssssso.         Theme: Breeze (MaterialYouDark) [Qt], Breeze-Dark [GTK2], Breeze [GT]
     :osssssss/        osssso+++.        Icons: breeze [Qt], breeze [GTK2/3/4]
    /ossssssss/        +ssssooo/-        Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK2/3/4]
  `/ossssso+/:-        -:/+osssso+-      Cursor: breeze (24px)
 `+sso+:-`                 `.-/+oso:     Terminal: konsole 25.12.3
`++:.                           `-/+/    Terminal Font: Iosevka Nerd Font Mono (10pt)
.`                                 `/    CPU: AMD Ryzen 7 7800X3D (16) @ 5.05 GHz
                                         GPU: AMD Radeon RX 7900 XTX [Discrete]
                                         Memory: 5.89 GiB / 62.45 GiB (9%)
                                         Swap: 19.01 MiB / 8.00 GiB (0%)
                                         Disk (/): 778.82 GiB / 1.82 TiB (42%) - btrfs
                                         Local IP (eno1): 192.168.50.214/24
                                         Locale: fr_FR.UTF-8

gamescope version : 3.16.23-1.1

env variables I use :

• PROTON_XESS_UPGRADE=1
• PROTON_ENABLE_WAYLAND=1
• PROTON_FSR4_RDNA3_UPGRADE=4.1.0
• PROTON_USE_WOW64=1
• PROTON_ENABLE_HDR=1
• OUTPUT_CONNECTOR=DP-1