The commentor below me (Podkomorka) already listed this issue, but I feel like I should also make my own comment. Upon loading the game my character begins to teleport around, usually in the air, but sometimes I can skip forward and teleport onto the ground from a running jump. I want to say its an error with a failsafe (if you fall out of the map it will teleport you back, for example), but without taking the game apart I don't know. If there's no reply for a while, I'll probably see if I can find an error with the software I have.
That being said, my computer can handle the graphics, and I am on Windows 10 (Home). Until this glitch is fixed, the game is unplayable, but it at least looks pretty.
Addendum 1: The teleporting also causes the shadows to freak out, which seems like something more is going on. The teleporting also can't warp you through solid objects, such as the invisible wall, so the game still checks collision while teleporting.