need for speed fullscreen problem

Dear Sirs,

I've just installed the newest Need For Speed (2015) that I bought a few hours ago.

I can't run the game in fullscreen mode and alt+enter does seem to work. Also the optimalization and performance are not going well with my PC. The game isn't running smoothly and it does not depend on graphics quality setting. Even on low settings and low resolution it seems to stutter. Changing it to high settings does not make it much worse.

I have the latest nvidia drivers for my GTX850m.

My setup is:
Asus R510jk:

-Intel Core i7-4710HQ(3,5GHz)

-Geforce GTX850m (2GB)

-8GB of ram

-Windows 8.1 (64 bit) Operating system

Regards.