FPS/Audio Stutters 5 years ago

I bought this game recently and have not been able to play and enjoy it due to constant audio and fps stuttering. It occurs about every 5-10 seconds. I've tried every fix I can think of as well as every fix/tip I could find by googling, and nothing fixes the problem. My computer is well above capable to run this game so there shouldn't be these problems. I'm running a Ryzen 5 1600 CPU, an RX 580 GPU, 16 gig DDR4 RAM, and the newest update of Windows 10. Uninstalling and re-installing drivers didn't work, changing and updating to different versions of Windows 10 didn't work, using different launch options in Steam didn't work, setting process priority and allocating different combinations of CPU cores to the game didn't work, uninstalling and reinstalling the entire game didn't work, and verifying the game files in Steam didn't work. Neither did simpler fixes like lowering graphics settings or running the game as an administrator. I'm extraordinarily unhappy that my money has apparently been wasted on a game I cannot play. Has anyone had this problem and actually been able to fix it? I've seen many threads online with similar problems but most of them appear unresolved.