I recently started paying attention to my DPC Latency and noticed that it was around 80 so I decided to do some tweaking and it turns out setting the timer resolution to .5 decreased my DPC Latency significantly, but only in groups of 4 seconds. Every 4 seconds the Latency fluctuates between about 5 and about 80. What could be causing this?
I have attached an image of this happening. Before the timer resolution change it was around a constant 80