Does the game crash or is the frames-per-second really low?
Did you navigate to the graphics settings on the menu, or have you tried closing CPU-intensive apps like Chrome before launching the game?
I will try to make a low-res option which will reduce the quality of the textures and meshes, and more graphics options so that everyone can play it. It should be out by the Battle Royale/Arena Royale update (ETA - a few weeks). Make sure that you follow so that you will not miss any updates!