I've tried various CPS2 games in addition to Gradius. Pretty much any game I fire up is stuttering, hovering between 85~104% framerate. Changed MAME.ini to software just to see if it made a diff and its the same, no worse/better. Desktop "appears" to be accelerated OOTB. Probably not helpful, but BSNES (v.86) runs like crap too. MAME's ini file is clean, so I haven't made any changes to vsync, throttling, etc.
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