Hey everyone,
I usually never post on forums but I had to create an account just to discuss the problem. I'm having exactly the same issue as those saying that their headset could be overheating. After 30-40 minutes of playtime, I would gradually begin to lose tracking (grey screen) until it is unplayable.
Like others mentioned, blocking the front sensors of the headset (where it is the hottest) does indeed prevent it from losing tracking. I also tried cooling the headset for about 25-30 sec near my AC and the problem went away for 15-20 minutes. With that said, I'm experiencing pretty much the same thing as most of you guys. I purchased my Vive in February of this year and the problem started around May.
I'm on the fence about what I should do and this is why I'm reaching out to all of you. I chatted with the Vive support. After going through the troubleshooting, they decided I should send the headset for repair so they opened a ticket number for my case. All I have left to do is send away the headset. I'm taking the weekend to think about it. I read OutpostVFX's experience a few posts above and this tells me that sending my headset away for repair could be a waste of time. I told Vive support that the problem doesn't seem to have been resolved by HTC themselves. He assured me that they would do a thorough diagnosic and repair for my headset, though I fear it will come back with the same problem a few weeks later. I don't understand why we are not offered to have a brand new headset through RMA in the first place.
Sorry for the long post, I just had to share my experience which is pretty much the same as everyone else on this thread. If anyone could shed some light on what I should do (send the headset for repair or wait for HTC to come up with a solution?), it would be appreciated.