There's a bit of an argument what would be the emulator to run the emulator categories for CTR.

BizHawk seems to have the most amount of input lag and weird dropped frames. I would not use this. Mednafen has significantly less input lag and dropped frames. It seems to work just fine on older PC hardware. RetroArch if you enable Run-Ahead even by one frame and tinker with the GPU settings you should lower the input lag to lower than Mednafen and closer or less than a real PS1. But RetroArch is pretty heavy for old PC hardware and is quite painful to configure. Run-Ahead will disable or cause issues with saves states tho.

My personal view is that if you have relatively new PC hardware you should use RetroArch but otherwise Mednafen.

Any thoughts?