I just wanted to share my experience with you guys.
I know plenty of people complaining about fps drops and sudden weird laggs.

Programs that i know causes problems for my system are:

Razersynapse: specially the latest update
Dropbox: when someone syncs, i get huge fps drops
Skype : When someone connects or writes to me.
Coldturkey: This program is an antiprokrastination program that blocks programs and sites, this caused huge problems for me too.

There, i hope this helps.