Hatsune Miku: Project DIVA F [BLUS31319]

Nope. 99.99% chance that there isn't a bug in neither Interpreter 2 and 1 for STW. Likely somewhere something else went wrong. Maybe one of the HLE calls returns an invalid address? Maybe the result of something that was done on SPU was incorrect and the PPU interpreter thus crashes. Maybe the RSX emulation doesn't set some address correctly? It could be a huge slew of things.

Hatsune Miku Project Diva F 2nd crashes the same way btw....

Also this is interesting, Project Diva F DEMO crashes the same way in VS, meanwhile it works in rpcs3 normally ???? O.o

Why does the demo crashes, when its pretty much playable without VS?

Maybe you built in Debug mode? Build in Release instead. Make sure that any weird debugging options aren't enabled and the usual stuff.