Does BBW2 on task manager (process tab) show a high percent of comp use, if not what does. You might try end process on whatever is extra high. On my comp BBW2 shows 1% loading a song and 0% playing,and Realband exe shows 1% when playing a song and 20% when generating a song. System Idle is 99% when playing a song. Might help you track down whats using your comp.