In my experience, they are pretty difficult to emulate.

My pretty recent build still struggles to play some scenes with specific weapons (i.e. the Lava Gun was the worst offender, IIRC, I think it was R&C2).

RX 5700XT + 3700XT.

Generally speaking, the beginning of R&C2 usually has issues with LOD, and possibly even the rest of the game does.

I have never played R&C1, and can’t recall my experience in emulating R&C3 but together with 2, they’ve always been much much slower than all other games I have tried emulating so far.