Starting last week playing more than 10 mins in deathmatch (seems to be specifically on Heat) fps plummets from stable 60 to jumping from 10 to 30 chaotically. Leaving the match helps, so does restarting the game. Playing on any other map doesn't have such issues, as well as playing ranked/defuse.
Version: 1.46.1f2730
idk if I also need to include some info like id or device but tell me if I do