Hi Tony,
For that kind of audio stutter (Eg. clicking on a window bar to move it), you can usually prevent it by increasing your audio latency setting:
1. Click on Options > MIDI/Audio Driver Setup...
2. Type in a bigger number for "Driver Latency" (Eg. 500 - 1000 should be good enough... but this can go higher if necessary)
3. Click [OK]
Note that this only works if you are using an MME audio driver instead of ASIO, although the behavior you are describing is usually an indicator that you are using an MME driver. In the setup window (opened in step 1 above), there is a button in the bottom-left that says "Audio Settings...[MME]" or "Audio Settings...[ASIO]". If that says [ASIO] then the Dirver Latency setting won't have an effect.
Last edited by Blake; 01/04/16 01:57 PM.