I setup and love retropie, but I will say that I was surprised at how many emulation issues I had even on some PS1 games. mostly it was framerate or processing issues, tried same emulator on my laptop with no problem.
raspberry pi is very affordable but it was surprising to me that the hardware specs were a limiter given how much of an increase they were over the ps1
still works and is fun, I think if duck station would have been finished for pi it would have been better probably.
true that 2d had no problems for me though, on pi400