I realize these posts are a dime a dozen, but I'm at wits end and could use some insight. I just built a new PC with pretty much top of the line specs (see below). However, I am still seeing FPS in the 20s on the stock Ultra settings and I seem to be limited by Main Thread. I really anticipated these specs would handle Ultra with no issue. I'm not even running full HD. My current monitor is only 1680x1050. I also used Ryzen Master in Game Mode with little improvement. The CPU itself doesn't even seem to be working that hard. It barely even gets about 55C. Any thoughts? TIA.
Ryzen 9 7950X3D
MSI MAG X670E Tomahawk
64 GB DDR5 RAM
MSI RX 7900 XT 20GB
DeepCool LS720 AIO
2TB M.2
850W PSU