I have bought probably two or three dozen different kinds of USB-C adaptors over the past few years, for old USB peripherals, for HDMI and display port, etc. They always last a few months then develop unreliable connectors and begin failing on any computer I try them with unless I baby the exact angle of the cable. There's something about USB-C that makes them particularly vulnerable to strain relief issues. Never had these kind of problems before with anything other than apple magsafe connectors. Certainly not from trusty old analogue jacks.