This should show you if any of the IRQ or DMA values used by your sound card are shared with other devices. If they are, try turning off those devices and see if it helps. Specifically, turning off the serial and parallel ports in BIOS is helpful, unless you use them. Same for the integrated USB controller.
Motherboard is an Asus P3B-F, which is the 440BX chipset. I had the sound card in a different slot originally, but my BIOS seems to give PCI 1 and 2 a dedicated IRQ, while 3/6 and 4/5 share IRQs, so I moved the sound card to PCI 2. I also disabled the serial and parallel ports, but had to leave USB intact since none of my USB-to-PS/2 adapters seem to work, and my dedicated PS/2 peripherals are en route. 2b1af7f3a8