Ideas
I'm unfortunately having the same problem. Unfortunately, two days ago, I've also developed a new problem with my AMD Ryzen 7 5800X: my CPU is doing more than my RTX 3090 Ti 24GB. After 277 hours, I can no longer play the game normally; I can't make any progress. Literally two days ago, I was still playing the game without any problems, and then one day I woke up and the game was unplayable. I've tried everything to fix it; the CPU isn't giving any errors. It's literally the game itself that's become unplayable. It started with the audio bug, and I got this thrown in for free. I hope you don't experience this, but I wouldn't be surprised if you do too, because I know several people with the exact same problem, even on consoles with the audio bug and then the CPU problem. Unfortunately, they're not responding to bug reports or anything; they deny the bugs in the game. The standard answer you usually get is, "It's your PC, not the game." That's something I heard several times.