My Alienware is running minecraft at 40fps max?

I just bought the new Alienware 15 2015 model 16gb of ram, gtx 970m. I installed the latest Java version and the latest drivers for my graphics, I also switched my graphics to the 970m when I'm running minecraft. I turned off v-sync and made mc on low setting and I still get 40fps at max and help with this? Btw its windows 8.1. I had the 2014 Alienware with lower specs and used to run minecraft with 400 fps no problem but idk what's wrong here. Any answer will help thanks

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