Well, just a reminder, I have a new Dream Authentics Excalibur cabinet and I purchased GameEx, even though I was already entitled to a copy for being a Dream Authentics customer (I didn't know that at the time). Anyway, like I said, everything works great in MAME32, but trying to access MAME32 from GameEx changes everything about it unless I run it as an external program. Support at Dream Authentics suggested I use the command line version of MAME, since they already include pre-made configuration files for that with the cab. I uninstalled GameEx, put in the new version and pointed to MAME instead of MAME32. I still have quiet sound, but at least now - as long as I turn off GameEx's ArcadeVGA stuff (my cab has a Wells Gardner monitor and ArcadeVGA card) it displays in the correct arcade resolution (Pac-Man at 15Khz, etc.). Unfortunately, it's still dropping frames like crazy, anywhere from ~5 - 20 at a time. Unacceptable, since I obviously have a top-of-the-line maxed out PC in there and no such issues when running MAME32 directly. I'll try a few more things, like removing Triple buffering and what-have-you (which I thought I already did once within GameEx), but I think for whatever reason, it's a lost cause. Bizarre. I'll maybe try a different front end and just GameEx launch that instead, or just work through MAME32. I don't know.