Run ahead on beetle psx?

just wondering if its supposed to work to use run ahead on psx games? I have tried with the beetle psx hw core, both running in hardware and in software mode, but no matter what it starts to stutter. However it works, but stutters. Alot. I have a i7 8700k cpu. I get about 4-5 fps latency without it.

It works with SW (haven’t tried HW). The trouble is, unless the game is a 2d game, it’s almost impossible trying to work out the correct amount of frames to shave off.

Yes you are right. And it’s not such a big deal on ps1 I guess. More important on older systems. Thanx!