Untracked memory increases by like 20-30 every time i play test the game??

This is problematic, as i can be working on my game for a few hours, playtesting and such. And when after a few hours, my total memory usage can increase from around 1k to like 3k (now this is only if im really playtesting a lot, and i dont know if it will be a problem outside of studio, because i havent uploaded the game yet.) any ideas on what may cause this? Help? Please? ;-;