The previous reports I saw for PS4 controllers said the device would only work for ~5minutes before disconnecting - given the severity of the report, that it was just a couple people reporting it, and that one of them said only one of two computers was affected lead me to believe it was a PC/OS issue.
Most of the time bugs people report are coding errors on our part but at the scale of Steam we also run obscure issues, ex: corrupted graphics drivers that crash during legit render calls or gamepads that cause crashes when you enumerate connected devices over DirectInput. If there's a common thread in the software or hardware of people reporting this issue it we can install that software or buy a computer with those specs, but we need to figure out how to reproduce the issue to fix it. I'd love to fix this issue but no one on the dev or HW support teams has run into this issue either on their work PC's or home PC's. The best thing to do is to make a support ticket with a system report and reference this thread.
