With that being said, at my wit's end, I completely disassembled my PC, cleaned everything (even though it wasn't very dusty), securely reseated everything, moved some plugs around the PSU, swapped cables, uninstalled NVidias drivers (again), uninstalled all NVidia software, nuked any file/folder on my PC mentioning NVidia, nuked all registry keys on Windows mentioning NVidia, restarted, reinstalled drivers and software, and now my games seem to run stable. Something in that process fixed my problem, or it may have been a combination of small issues compounding into a big. Who knows? Either way, I have been successfully playing Cyberpunk, Borderlands 3, and FS2020, for hours now and not a single one of them crashed.
I appreciate the help on this forum regardless, but I'm glad the hardware is fine. It would have sucked having to replace any of it right now given the shortages right now.
Nothing closely related to VMQ found, but I disabled Packet Priority and VLAN, but no effect.
I just don't get how Windows 10 could be so spectacularly misconfigured for something so widely used. 😞