Anyways, now I've got a really unbalanced system. 3900X, Vega 56, 2x 2133MHz 8GB and 2x 2400MHz 8GB. I'm only getting around 190 FPS in CS:GO, not the most accurate benchmark but compared to my old i5-7600K, the same system was around 200-210 FPS.
Any ideas other than my slow RAM? I'm gonna look into overclocking it, cause right now with the BIOS OC at 2600MHz it's at CL18. Don't have the budget for a new GPU right now, sadly, but it's flashed to a Vega 64 BIOS, undervolted and overclocked, though I could tweak it better.