So any ideas?

I made an exclusion for plutonium the exact same way as the video told me to do. Its still not working

Windows security

I have the game installed and it works for about 2 mins and then crashes. I can join servers and play, change classes and do everything but only for 2 mins. I get no error messages, the game just closes. I have shadowplay disabled and nothing else running. I shouldnt have any problems running it as i can run iw4x at 333fps solid and cold war at about 140 fps. If you have idea on how to fix my problem i would really appreciate it