[wrxtasy]

The one question I have is why is this Hi-Freq switcher even needed in the first place, is there a problem with the HiMedia Firmware ?

because of limitation is good for TV series, less for film with HD audio.
no , now work very well and there is a github repository .

So does the external HiMedia video player Refresh switch or are there more Workarounds needed for that too ?

On AMLogic for example its all automatic, switching to all the Resolution modes.

yes, but need custom version of kodi, If I'm not wrong. At the moment vanilla kodi not support auto-switch with any device. SPMC is like cutom/fork of kodi.

No, the regular Kodi Jarvis Android App refresh switches on well supported AMLogic devices, provided you patch and configure the Firmware correctly. These cheap "Ship and Forget" Android AMLogic boxes often run into problems with black screens when refresh switching because of Firmware issues.