runs with no crashes or bugs, but performance leads much to be desired. Shader compilation stuttering was very bad at the beginning of the game, but went away in later levels as they were already cached. I could almost never hit 120FPS, even in cramped areas. FPS varied from 110 down to 50 in the worst spots (constant 50 staring at certain wide open areas with lots of objects). Overall I think the game is just poorly optimized and uses too many draw calls.