Compatibility Report

• Name of the game with compatibility issues: Overwatch 2
• Steam AppID of the game: 2357570

System Information

• GPU: AMD Radeon RX 7900 XTX
• Video driver version: AMD AMD Radeon RX 7900 XTX (radeonsi, navi31, LLVM 21.1.6, DRM 3.64, 6.18.9-2-cachyos) 4.6 (Compatibility Profile) Mesa 25.3.5-arch1.2
• Kernel version: 6.18.9-2-cachyos
• Link to full system information report as Gist: https://gist.github.com/Aigis/ab054de89ac996f03351f287cb7f87ad
• Proton version: GE-Proton10-29 (It happens with any other version)

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-2357570.log

Symptoms

Game fluctuates ping between matches wildly (40-120ms for me), occasionally spikes in matches. 10-20% packet loss for the last two or three patches (I haven't kept track). I do not experience this issue on Windows, I have tested it between different distros, different kernels, different Proton versions. Other people are reporting this issue as well, for example https://us.forums.blizzard.com/en/overwatch/t/consistent-10–20-packet-loss-since-new-season-on-linux/998697/8

Reproduction

Launch the game, you can experience it as easily as going into training range.

Please let me know if there is more information I can gather and submit to help, thank you