It seems that anytime I'm mixing more than a few tracks with only modest effects--and I experience this with both Acid Pro 5.0 and Cubase SX 2.0--my computer gets really logy and produces choppy audio (sometimes to the point of crashing). I've done a number of tweaks designed to make my system run better for audio, but my question is this: will having a factory sound card affect playback during mixing? I'm running a 2-gig P4 with 512 megs of RAM, and if not the sound card, do I just need more RAM, or worse, a newer system? Any comments and/or links to overlooked threads are appreciated. Thanks much.