It's most likely because of your CPU been too slow. what games did you try?
Windows 7™ 64-bit
ASUS P8Z77-V LX Motherboard
Intel® Core™ i5-3570K 4.2GHz
Nvidia GeForce GTX 770
8GB DDR3 Ram
ASUS P8Z77-V LX Motherboard
Intel® Core™ i5-3570K 4.2GHz
Nvidia GeForce GTX 770
8GB DDR3 Ram
