Constant increase of memory usage?

I dont know whats going on, but im noticing a constant usage of memory everytime I play.

At 1st day was around 800mb-1Gb, but now its 1.5gb-2gb memory usage, kinda strange it doubled just a few patches ago.

Kinda having some small video lagspikes with that, the memory at all its not a problem for me because I got 16Gb on my pc, but somehow its affecting slightly the performance.

Strange...