Ar Nosurge: Ode to an Unborn Star [BLUS31478]

When emulating this game or Atelier Shallie (and probably all games of using this engine) I get very strong audio stuttering with all audio outputs and all SPU thread settings, while the video runs almost completely smoothly. It makes it almost impossible to listen to. Couldn't find a way around this. Am I alone with this problem?

Okay, seems like this was caused by having VSync or Frame limit turned on. Unfortunately without frame limitation, the movies (e.g. the intro movie) run with like 0.1 frames per second.