Need to watch in 60fps and even slowed down with the youtube features to be seen clearly.
Couching only seams to update the players position with the same timing of ticks. In the 64 tick video it pretty much only updates every other frame.
the second half of the video is the difference between jumping and crouch jumping both on 64 tick.
![](https://s2.save4k.ru/pic/HA-KCBTB9do/maxresdefault.jpg)