GTX 770 BAD FPS and Freezing! Please help!!

MSI Gaming N770 TF 2GD5/OC G-SYNC Support GeForce GTX 770 2GB 256-Bit

Bad lag and lag spikes in all games. From Minecraft to LoL. Please help! I am about to return for a refund.

SSD SAMSUNG 840 Pro Series MZ-7PD256BW
CPU Intel Core i7-970 Gulftown 6-Co...