I recently tried to stream my laptop to my TV using the host software Sunshine and client Moonlight, and after a wasted Saturday horsing around trying to get it setup I realised that I wasn't able to stream in H.265 (HEVC) at all; I was warned by moonlight that 'Your
Host PC doesn't support encoding HEVC'.
I did some further investigating and found that I cannot in fact play anything in HEVC format, this was even after purchasing Microsoft's HEVC Codecs from the store, and after reinstalling the third party HEVC Manufacturer Codecs which actually I can't seem to reinstall now. My GTX 1660Ti should definitely support HEVC, it's on this list:
https://en.wikipedia.org/wiki/Nvidia_NVDEC
Any support or suggestions are welcome, I've exhausted my options and it seems like the only thing left for me to try is updating to Windows 11 which I really don't want to do.