So finally this bug also got me. I already had some problems with the screen (Bright spots on the display and Parts of the touch screen dont work). I got my brand new third display and it was going crazy from the first moment.
Touch and hold delay improved it slightly.
After cleaning the contacts to the screen it works like a charm for one evening. The next morning, it was jumping again.
Switching on the pointer position in the developer options (translated from german. No idea, what it is called exactly in english) as suggested from @rynn seems to work for me. No jumps this whole day.
So I am not sure, wheather its a hardware problem, or a software problem. Maybe a mixture of both.
When the pointer position will work for more than one day, I am more or less happy with it. Its ugly, but I hope one time an update will be able to solve the problem, because it seems to be possible to solve it on the software side.
Apart from this it makes no sense for me. As far a I understand this option just shows position and some data like speed and position in the top of the sceen. No idea, what does it change.
While I am writing, I had the first jump with this option on…