i had an asus g752vs OC version. and on assassin's creed origins on hight details i got 90 degrees but the gpu never passed 80 degrees, the gpu is a problem careful with those temperatures . the cpu it's not normal to reach 90 put still sometimes can reach 90 degrees that is not a big problem, but the gpu yes it's a problem , normally had to stay on 70 but with a big game requirements and very hight details it may reach 80 , but never have to pass 80 . try to lower a little the details and try it again, if still goes over 80 degrees , speak with the seller. if will not get over 80 degrees then you simply ask to much for what you have. 🙂 and try to lower details.