Day 119ish Cycles/Pixel Inconsistent Values

Good afternoon everyone,

Probably not an issue overall, as development up to this video day is still utilizing Windows blitting, but I've noticed very inconsistent cycles/pixel and had similar FPS inconsistencies when we were utilizing that measurement in earlier videos.

Currently I'll get something along the lines of
ProcessPixels - 48cycles/hit
ProcessPixels - 48cycles/hit
ProcessPixels - 50cycles/hit
ProcessPixels - 180cycles/hit
ProcessPixels - 170cycles/hit

ProcessPixels - 48cycles/hit
ProcessPixels - 48cycles/hit
ProcessPixels - 210cycles/hit

While I've read some previous posts now that the forum search is working... yeah!... where it's not too relevant to concern myself at this point, I'm more in a curiosity mood as I've noticed Casey's machine hits a pretty steady cycles/hit without big jumps. I've attempted to run Visual Studio in admin mode to see if it would create a higher priority to the app, validating the sleep code in the platform layer and turned off most background applications all without any improvement.

At this point, I'm suspecting it's just Windows switching processing power over to other processes, but for future development, any thoughts on what to look out for that could be causing this?

Thanks in advance,
Mebourne