Having messed about with some settings, what seems to have worked is turning on adaptive quality and setting it to 60 fps. Everything else is set to max. Hope this continues to work.
It isn't even lasting an hour now it starts on the title screen with the sound stuttering.
Had trouble launching yesterday. Then it has just gone down hill. FPS drops through the floor after about an hour of game play and the audio drops out with it. Playing on pc. All latest drivers installed. I7-10700, 16 gb ram,and NVIDIA 2070 super.
Having the same issue here aswell.