whenever i move a window, or the edit a pd patch i get some really nasty additional noise on my audicards.
When you move a window or edit the pd patch, the CPU has to do a lot of work to redraw the gui. The result is that some fragments of audio do not get calculated, and thus you will hear a nasty 'click' when the audio signal suddenly drops out.
Also you should become familiar with the sound of the click (as compared to 'noise', which it is not) since the click is the most dreaded sound which all PD programmers must go to great lengths to prevent.
i m starting pd now with -frags 8, which reduced it, but not 100% .
That command will add latency to the audio stream... which only slightly reduces the chance that audio frames will be dropped during gui updates.
Other things you can try:
However nothing you do can assure the absence of a click since Linux is not a real-time operating system.
andy