Yeah, I can't imagine performance is going to get any better, unless you run at a really low resolution, or manage to inject some kind of supersampling. UE5 is already demanding enough, and that's without the additional overhead of a lack of optimization. In defense of indie UE devs, optimization shouldn't be done until much later, when the game is in beta/feature complete. Work on content first, then optimization. Your systems are fairly weak, but not weak enough that you should rush out and buy a new one if you don't have the disposable income for it. It's especially not worth getting a new system to play a tech demo of a porn game that for all we know, will never get finished.