So yes your computer isnt seeing the game as an actual game so it assumes its an app therefore using only your CPU to run the graphics of your game, Worry not easy fix. In you computers search bar search (Graphic Settings) now find MX Bikes, if you dont see it there click add custom program/app and find the MX Bikes EXE now click that and it says (Options) click that and youll see, (NVIDIA Graphics High Performance)... Problem Solved, Thank You