This seems to be one of the issues, I have got some Gorilla tape (like duct tape but better) and stuck a Magnum sucker stick to the top, don't cover any of the vents. I have put an eraser between the USB plug and sucker stick (just cos it was the right size to fill the gap) I have then taped the USB plug to the stick & eraser. The issue seems to be the plug & wire pulling on the wireless adaptor, maybe the PCB inside, just a crap design. Also I have the fan mod on the top to stop it getting red hot, can't remember where I found the fan mod info tho was over a year ago. Have now been using for a few days and has made a massive difference. I still do get the odd blue/black issue. Steam VR loses all devices temperarily.