I'm fully aware of the Maurice + double cerb room clip, but there's another I've seen where you go by one of the valves at the start of the level and clip through the floor. I've tried to replicate it, I'd have my fps at 120 and would slide into the largest part in the gap, but all that would happen is I would hear repetitive splashing noises and the white particle effect would be made in the water. Has it been patched or am I doing something wrong?

https://www.speedrun.com/ultrakill/forums/vi8mk here is a link to another thread where I explained it simply

Ah, tysm! This will save me so much time