Stuttering gameplay when Borderless/Windowed, AND fullscreen.

My specs are..

i7 4970k, 2 780 ti in sli, 350.12 drivers, Asus Sabertooth Z97 Mark 1, CORSAIR Vengeance 8GB DDR3 1866 PC3 15000, Intel SSD 180 gig, and 2 2TB Hard Drives, and an Acer 120hz 1920x1080 monitor.

When I try and play the game with the borderless windowed mode, I get random stuttering, sometimes minor, sometimes flat out unplayable. When I set the game to fullscreen, most of the time it will run flawlessly at 120hz, but sometimes it to will get the same symptoms, stuttering and almost unplayable.

I've tried.. updating realtek drivers, using d3doverrider, reinstalling windows 7 with a fresh install, turning off vsync, disabling nvidia streaming, unparking the cpu cores, and the issue always returns. I don't download illegal programs, my anti-virus program is up to date and run every other day, I use ccleaner every other day as well.

I cannot figure out what the problem and it is absolutely driving me insane.