My Battlefield 4 Freeze's everytime after 10-20 minutes of Playing.

I try the User.cfg but it didnt helps.
My PC got this Hardware
Win 7 64 Bit
Intel Core i7-3770K 3,50 GHz
Ram 8 GB
Nvidia GeForce GTX 680 Jetstream 4096 MB
Hope anybody can help me...
Btw. sorry for my English
