This is what is going on:
I put a keyframe and change the value of the keyframe by clicking and dragging my mouse. When I move my mouse slowly, the value won't change so I have to move the mouse fast so that the value changes. I basically need to drag the mouse some amount to the side to make the value change. When I click and drag the mouse slowly, the values start to change after the mouse travels like 3cm. And since this takes quite some time, I drag the mouse quickly to one side so that the values start to change almost immediately and so that I don't have to find that sweet spot where it smoothly starts to change values.
However when I move my mouse quickly the value obviously jumps to some "high" number because I didn't do it slowly - smoothly. When I then decide to bring the value down, it jumps again as shown in the video. Like it's teleporting on the values rather than smoothly going down.
This happens when I use both my external mouse and built in trackpad so I don't think it's caused by my mouse.
Hopefully you can understand.
https://youtu.be/XDdhBt2ZiHQ?si=Xd8fz1yA9r8IYwwp