Your RAM could be a portion of the issue as AMD LOVES RAM having slow RAM like 2133 in an AMD system isn't that good of an idea I'd swap it out with a 3200MHz kit as for the CPU you could get a new Ryzen CPU (such as 2700 or 3600) if you feel 1st gen is holding you back but it probably isn't the CPU also there will ALWAYS be a bottleneck otherwise you'd have infinite FPS.