asus rog laptop problems

Hi, So basiacally im having problems gaming on my laptop, so i have a gtx 950 and an intel i5 so my problem is everytime i have my Gtx 950 on it will stutter soo much like 1 sec 60 then an other sec 1 it goes on and on till i turned off my Gtx, and b4 anyone starts asking if i updated everything...