Holy crap, I got this game to run at full speed simply by enabling "Disable UBO" in the new revisions. I tried everything else but nothing else except this option would speed up the game for me, and it made a HUGE difference. Only the Duodecim cutscenes still run slowly but otherwise I'm always full speed regardless of stage, except when there are loads of heavy spell effects going on. This on AMD Radeon HD 6740G2 (or rather 6650M). Just thought I'd share in case anyone needs tips speeding it up. May post a video later to show it off (I have a pretty mediocre PC also, so I didn't expect perfect performance to begin with, so it's great I found it out).
And yes, the graphics do look much better in the new revisions too, there are much less texture bugs on the stages themselves now, although character clipping issues are still there mostly in cutscenes.
And yes, the graphics do look much better in the new revisions too, there are much less texture bugs on the stages themselves now, although character clipping issues are still there mostly in cutscenes.