Grid (12750)

While being playing, I recieved a steam message. Initially, I could alt-tab normally to respond and go back to the game. After going back to the steam chat window and then back to the game, it had a tremendous loss of performance (to around 5-10 fps from a very stable 60+) becoming unplayable.

I alt-tabbed again to go back to chat and check on my system monitor. I observed the whole system was slow and sluggish to respond, to the point that firefox crashed and the steam chat window was unresponsive. At this point the game crashed and closed itself. Here's the proton log The original file was 40MB so I just cut around the 100k line until close to the end, seeing as it is mostly repeated stuff. I am keeping the original file and can upload it if useful.

Even after the game crashed and as I write this, the steam chat has an odd behaviour. The friend list window has cloned itself, only one of them responding to clicks.

System info: Ryzen 1600x, Radeon RX 580 on Debian Testing.

Review the attached Proton log and linked system information first, then examine the reported alt-tab and Steam-chat sequence against existing Proton issue reports. Done means reproducing the performance collapse or isolating a clear cause and documenting a verified fix or limitation.