I just rented Mega Man X5 and tried it on epsxe. It worked fine on some stages but on certain stages (Mattrex stage, first boss stage) it had really slow and choppy music and gameplay. Then I tried it on VGS and the game played fine but the music was choppy on every stage. My last resort was bleem. I tried it and it work fine, at 3 times the speed. I tried lots of setups with each of these. I would think that its the CD but there are different problems on each emu. I have a Celeron at 800mhz on windows ME, crappy video card, Voodoo 4 4500 and a 48x cd-rom.