Once pointed to LatencyMon I started running it to identify ISR & DPC spikes and spikes = audio dropouts! “The definition of insanity is doing the same thing over and over again and expecting different results.” Well, that’s how it felt, I’d make changes to the system, do another run with similar if not identical results. Mostly graphics drivers, occasionally the HD Audio bus drivers and related kernel drivers would spike... But there were others though less frequently, and each time for the