I've been tinkering with these games a little and there is always a little performance improvement each revision of mame. Some of them can go real nice using auto-skip (audio can lag/stutter still) but I've yet to see anything really playable on my P4 HT 3Ghz & GT6600 card. Way I look at it is that it's great to see the starts of an emulated game and it's one of the things i always test out each mame revision. Though.. the n64 emulators are somewhat more complete and playable, tho it's not the exact same. Please if anyone has a magic bullet to get these roms running nice lemme know! (Carnevil is in the same bag btw). Oh, and some of the games on the Dreamcast are great fun to play!