I need some advice. My Valve Index is giving me a huge headache. So first of all setup: My two base stations are about 2.5 meters up in the ceiling level. Too high? I already drilled holes... 

I'm asking because the screen goes grey multiple times during a session. Sometimes I spot one of the base stations going "off". I don't know if they are broken.

Steam support promised new controllers but you never know. I still haven't received them. Also they are sending a new cable too. I don't know if those will fix it but I'll see once I have them.

Also the headset; During BeatSaber I can't get it to be comfortable at all. I think my headshape isn't a typical one where you guys have gurth at the back of your head, I don't. This means the headset pressure is right on my temples and I get a migrane easily.

Also working out in VR I often just feel like the headset never sits properly. If I make the Index super tight it still moves around during BeatSaber. Is this normal or is there a way to fix it? I already got a VR Cover for the back. This didn't help but keeps it clean I guess? Also are the Knuckle or Index Controllers bad for BeatSaber? They seem to be. I even got a wire suspension thing but nothing ever seems to make VR feel comfortable. I think this is just because the Valve Index headset is so heavy and my headshape different than normal? I don't fucking know.

tl;dr - screen flashes grey during beatsaber - I lose track of base stations - controllers misaligned - not comfortable headset