Starts randomly during the round, can only be fixed by restarting the game. I only had one round that went smooth from start to finish, in all other games it stutters like hell after 15-30 minutes. Playing on Debian Linux, stable Proton, i9-12900kf, 128 GB RAM, 3090 Ti. It all began a few days ago, probably after one of the recent updates. I had no such issues before, playing since August. Tested on two different NVIDIA driver versions, 565.57.01 and 550.127.05, no change. Tried Vulkan and D3D11, also happens with both. I downloaded the 565.57.01 driver on Novermber 5 and I had issues after that so I thought it might be a driver issue, apparently not. The input works fine (=no lag, the game reacts instantly), only rendering is suffering like that.