Now I’m asking what I can do to fix this? I am a beginner at this and only want a functional arcade for my friends to play on.

After I turned on the framerate display it told me it is only using 30mb of vram so I think your answer may be related

I flashed an image of recalbox 17.12.02 on a 32gb usb3.0 thumb drive and plugged it into a pretty modern pc (intel i5 6600k w/ Nvidia asus gtx760 w/ 500gb HDD) and when I booted it up, the whole OS ,with my uploaded roms ran very slowly at 1.5fps and 0.5fps during games.

Ps I did not change any settings