FL Studio 12 doesn't work on Razer Blade 15

Hi,
I have bought the Razer Blade 15 a few month ago. I'm mostly producing music in FL Studio 12 while having my Laptop connected to an external screen. I don't have any problems while producing on this screen. But as soon as I switch to producing on the Laptop itself FL Studio doesn't work properly anymore. My track isn't getting played properly in the playlist. It's stuttering and you here crackles all the time, as if I'm having CPU problems (which isn't the case). I can't find any solution to this problem. It's really anoying as anytime I want to produce without having my main screen with me, for example on the plane, it won't work due to this issue. And to me it doesn't make any sense as I can even play games such as Fifa on it but as soon as I draw a 4 bar loop into FL Studio it doesn't work anymore. I'm happy for any kind of help, as I can't find a solution myself.
Best regards Timo