As the title suggests, I have almost always played in windowed mode, and now after patch (mind you I play w/ max settings) I have this problem.
My problem is when I have my browser (firefox) open and doing w/e activities your imagination decides, I get huge stuttering in game. Its very annoying when trying to level or do w/e I'm doing and it happens. All of my drivers are update, and of course my UI is still buggy, but I disabled my UI to no avail.
I searched "stuttering" but didn't find a thread with a similar problem, so sorry if this is being discussed else where, thank you in advance for any tips and or guidance.