A Problem i had was every 10 seconds it would freeze (drop frames?) for 2 seconds. even in the main menu it was doing this. tried messing with all the parameters etc to no avail. I only have 8GB Ram but with game running still had like 35% free. Ended up just going into task manager and killing everything to free up all of about 5-10% more ram and it seemed to fix the problem. Just in case someone else is having a similar thing. Still dont think it should be stuttering like that though, Ram was no way near capacity.
Specs are: i7 2600k, 8gb ram, 1tb SSD, gtx1080.