@haeckerfelix Incredible… For some time, my screen at work has been going off for few seconds. Although we do not have IKEA chairs, this may be a very good explanation! I do have an IKEA chair at Home, and still haven’t suffered this problem. Maybe it is better suited for the job as it is marketed as a “gaming” chair, whatever they mean with it? (Model is MATCHSPEL). Thanks for sharing!