Loses sync on stage 3 (the stage on the boat type thing), whether or not sound is enabled or not. I've tried NVRAM as well, but that made it worse, so I guess that's not a issue here.
First problem I've had with any CPS-2 game on MARP (other than those that used NVRAM ), so this seems rather strange.
Oops, I lost sync too with official mame.
I recorded it by stretchmame. Cuz official mame 0.59 has a tilemap bug.
I didn't edit CPS2 driver. So I don't know why it causes desync.
I will re-post soon.
(If you just wanna watch my play, try stretchmame0.59.)