The problem was mouse losing contact, stupid cheap mouses every mouse and keyboard i ever had, works fine few months and then connection starts breaking at the point where cable enters the mouse.
21st century and they have not been able to solve this. Maybe it does not happen in some 100€ mouses, i don't know, i never payed that much for a mouse.
I tried to prevent this on keyboards and mouses with electrical tape on the bending part, it helps, but not always.
Yesteraday i opened the mouse and no, i was not feeling like cutting the cable and re-connecting the 5 thin wires, i just pushed the cable little bit inside so new healthy part is at the bending point and for now it's good.
I am starting to consider buying an expensive mouse if that would make a difference.