The HDD usage is from the paging file. I forgot to mention I moved it there when I was troubleshooting.
I checked and my old SSD was also NVMe and had no problems, but you're right this one is PCIe 4.0 instead of PCIe 3.0.
I upgraded my SSD and now I'm having crashes, stuttering, and my system is laggy while running games. I suspect my GPU is being bottlenecked, but not sure which component is doing it.
System Specs:
CPU: Intel i5-8400 2.80 GHz
Motherboard: ASUS TUF B360M-PLUS GAMING S
RAM: 2x8 DDR3 1600 (runs...