Hello @jriendeau, we're using one issue per unofficially supported game title, and usually I'd transfer this issue report to #2791, however, you've described the issue being tracked at https://github.com/ValveSoftware/steam-for-linux/issues/11446. Closing as a duplicate.
Compatibility Report
System Information
GPU: AMD 7900 XT
Video driver version: 6.11.0-21
Kernel version: 6.11.0-21
Link to full system information report as Gist:
Proton version: 8.0.5 / Experimental
I confirm:
Symptoms
The FPS performance falls off a cliff after half an hour when I provide input, either keyboard or mouse. The Proton logs are pretty normal, but after the half-hour, it just keeps flooding the log with the same exception.
96792.768:0218:021c:trace:seh:dispatch_exception code=e06d7363 flags=1 addr=7B04A738 ip=7b04a738
96792.768:0218:021c:trace:seh:dispatch_exception info[0]=19930520
96792.768:0218:021c:trace:seh:dispatch_exception info[1]=0250e7d4
96792.768:0218:021c:trace:seh:dispatch_exception info[2]=0191a1e4
96792.768:0218:021c:warn:seh:dispatch_exception EXCEPTION_WINE_CXX_EXCEPTION exception (code=e06d7363) raised
96792.768:0218:021c:trace:seh:dispatch_exception eax=0250e734 ebx=0cdf22d8 ecx=00000000 edx=0250e748 esi=0250e7c0 edi=0250e750
96792.768:0218:021c:trace:seh:dispatch_exception ebp=0250e78c esp=0250e728 cs=43d0023 ss=002b ds=002b es=002b fs=43d0063 gs=43d006b flags=00200213
96792.768:0218:021c:trace:seh:call_vectored_handlers calling handler at 02EED310 code=e06d7363 flags=1
96792.768:0218:021c:trace:seh:call_vectored_handlers handler at 02EED310 returned 0
96792.768:0218:021c:trace:seh:call_stack_handlers calling handler at 01508144 code=e06d7363 flags=1
96792.768:0218:021c:trace:seh:__regs_RtlUnwind code=e06d7363 flags=3
96792.768:0218:021c:trace:seh:__regs_RtlUnwind eax=00000000 ebx=0191fa94 ecx=78b24498 edx=00000000 esi=0250e204 edi=0191faa4
96792.768:0218:021c:trace:seh:__regs_RtlUnwind ebp=0250e108 esp=0250e0f4 eip=78b23924 cs=0023 ds=002b fs=0063 gs=006b flags=00200246
96792.768:0218:021c:trace:seh:__regs_RtlUnwind calling handler at 7BC5D260 code=e06d7363 flags=3
96792.768:0218:021c:trace:seh:__regs_RtlUnwind handler at 7BC5D260 returned 1
Reproduction
Play the game for half an hour, then it starts dropping frames.