It worked right just before stable 0.8 version got released. I tested on PAL megadrive but in 60hz mode (Highly recommend the mod, our TVs easily support NTSC, Yours is Sony if I'm not wrong , GOAT crts)

aaand I suppose PAL50 is by default largely untested / timing issues may rear their ugly head

For cave story I prefer 50hz as the original PC release was also 50fps, and this MD version feels identical to it in pal50 imo. I hate how the later ports just lazily made it 60fps, and just kept the sped-up gameplay and music. My mega drive II is pal50/ntsc60 switch modded btw.

And its also broken in ntsc60hz too, with fusion 3.64 at least. I tired from hard reset in case switching pal/ntsc in the fly messes up something

Well, You made some perfectly valid points , sorry for jumping to conclusions . Same is true for VirtualBoy emulation, games are skippy with 60hz , hardware utilized 50hz lcds

Seems like Andy released new test builds recently, worth checking out @32JP