Yeah, this is what i spent today 5 hours for. I've discovered that all these issues occurs only in a distance from 1 to 3 meters (until 1 m and from 3 to 5 there are no issues). Exactly on that length is my table, so i was pretty sure there is something from my hardware causing that issue, so i started to unplug each device and check if it helps.
Turned off monitors, leds on keyboard, mouse, unplugged microfon, unpluged keyboard, unplugged all monitors from pc and power supply, unplugged anything i could only unplug, left only a PC with a HMD plugged in, nothing else. Pulled a table half meter away - no changes, at all.
So i decided it must be something reflecting the light, like a dumbass i spent another hour trying to remove any thing that could reflect the light (in fact almost all things are reflecting, starting from a glas ending with a plastic bottle and parfume). Nothing helps.
However all this hours were not spend useless. Now i know that the spot where its mostly glitching is right in the middle of the room, so its either:
1. my lighthouse has some issue with tracking middle distances
2. the smoke detector on the ceiling or the wires are affecting tracking somehow. Wires are right in top of the glitch are, however light switcher doesnt affect anything. Still not sure if its really possible, because my ceiling is pretty high (4-4.5m)