Am I understanding you correctly that you're saying your Vive headset gets unusually hot during use and this seems to correlate with a loss of tracking? This is true for all three of you? Can you each give me the details on your set up: what version of Vive you have (Consumer, Business or Pre) how long it's taking for this to occur and how warm the room is you're playing in? It is summer, so some places can get pretty hot. Also, probably a dumb question, but you're using the standard parts from the kit, not a third-party cable or anything, right? Thanks,
-John C