Compatibility Report

• Name of the game with compatibility issues: Call of Duty: Black Ops III
  -Steam AppID of the game: 311210

System Information

• GPU: <RX VEGA 56>
• Video driver version: <Mesa 25.2.4>
• Kernel version: 6.16.4-116.bazzite.fc42.x86_64
• Link to full system information report as Gist:
• https://gist.github.com/kaboom45/a67848227a220c226198eddef0ee87d3
• Proton version: 10.0-3 (or proton 9, 8 ,7)

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

steam-311210.log

Symptoms

On Intel Xeon E5‑2690v2 game fails to launch under Proton 10.0‑3.
The same system with E5‑2696v2 runs the game successfully.
On Windows 10 with E5‑2690v2 game also runs successfully.
This may indicates a CPU‑specific issue in Proton/Wine.

Reproduction

Launch Call of Duty: Black Ops III with Proton 10.0‑3 on a system using Xeon E5‑2690v2.
Observe that the game fails to start, producing the above log errors.
Swap CPU to Xeon E5‑2696v2 on the same system.
Game launches successfully under identical software environment.
On Windows 10 with E5‑2690v2, the game also launches successfully.