Corrosive Cubes (and other game elements) have their function tied to user FPS
In the video I am unable to walk through the corrosive cube at 144 FPS. When I cap my game FPS to 10 I am able to walk through the cube without dying. This is one example of game FPS affecting the game mechanics.
Other traps and guards also have varied (and sometimes broken) behavior when the game FPS drops too low.