In my DAW, the existance of an audio track in my sequencer (SONAR 4) tends to interfere with midi input and playback (makes it sluggish).
This happens with midi-input from both a USB Midisport 2x2 and a PCI Audiophile 2496 and audio playback with both the PCI Audiophile 2496
and built-in audio Realtek AC97.

Can anyone suggest a common problem that may cause this?


(The DAW includes Asus A8V Deluxe, Athlon 64 3000+,120GB IDE System Drive,200GB SATA Audio drive, 1.5GB memory, PCI Audiophile 2496 or built-in Realtek AC97 for audio, a PCI Audiophile 2496 or a Midisport 2x2 for midi input, Radeon 9200 SE AGP, Marvelle Yukon Gigabit Ethernet, Windows XP and Sonar 4. I've followed most of the suggestions on MusicXP to optimize the system for audio.)