Run decently but some frame pacing oddities and no audio passthrough. Otherwise not a bad purchase for £10.
I am the developer, and I am indeed running GammaOS. This cable will work regardless of the operating system. Some caveats with this cable:
Frame pacing is an issue
Audio is not passed through
You are limited to the resolution of the device LCD itself
Cable:
Software is this
I am not responsible if this contains malware, it is what is in the manufacturer instructions.