Whenever a map loads my first time I run around the map I have significant framerate drops for a split second like a short freeze. I wouldn't complain but this has a big impact on my ability to kill ppl in the beginning of rounds since it causes a jump with my mouse makin it hard to aim. Only after I run around a map does the framerate smooth out. What gives? How do I fix this? This happens regardless of my graphics settings

All updated drivers
670 sli
3770k 4.4ghz
P8z77v pro
8gig ram 1600
Ssd intel 180 gb