game is pointless

In one of my runs, a glitch occurs where objects start to get stuck on or behind the character. This causes them to flail about, causing damage all around a room the moment you walk in. At 15:33 in my run (https://www.youtube.com/watch?v=CzcMCiJ3M8o), you can see the objects go behind me, then for the next minute, the game starts breaking, lagging really hard, and giving me an error message in the top left corner. Lag starts at 16:46, error message at 16:48...