@haeckerfelix I have the exact same problem with my chair and monitor. I only have this happen when:
a) my (work) laptop is using the screen
b) I’m getting up from my chair

My desktop PC is using display port is not affected and it does not happen a lot.
My desk is wood with a metal frame and adjustable height, standing on hardwood floor.

It is very frustrating at times. I was thinking of buying a rubber mat to put the chair on for some time but I don’t think that’ll solve it