Tried Altered Destiny and Waxworks with current source and their MIDI options are working okay for me with default settings. Since you didn't mention it, are you using the default cycles=auto setting? I ask because MPU detection stuff can be sensitive to timing.

Ok, it's become a little more sensitive is all. I had to drop my game cycles for all those games by 1000 each to get MIDI working again. I prefer not to use auto, I like to specify exactly what speed each game will get. There are exceptions... but not many. Games that actually perform better on auto. I usually only use it when I first install a game, this gives me a ballpark to work around. I believe there was one game, don't remember which one, that actually played better on auto than when I tried setting the cycles manually. Most of the time though, it ends up messing the timing on other things.

I guess something they added (and it turns out I'm working with 3995, not as far behind as I thought,) altered the detection timing a bit. Didn't think of that. Thanks for the help 😀 I'll have to adjust the cycles on those games (and any others I come across.)