That's really too bad, those Aureal Vortex cards are the best sound cards ever made, at least that's what I heard... What's even better, I got mine for free, it came inside an old Pentium 233

Meanwhile, I tried replacing the sound drivers and doing other upgrades/changes but so far I only managed to make the games crash less often. I also dedicated IRQ5 to MX300, through BIOS. (it used to be IRQ11)