Tvheadend

Thanks to a post on another forum I've finally gotten hw-accelerated transcoding to work via MPEG-TS-Spawn-Profiles on my RPi4 (TVH 4.3, pios arm64):
https://www.kodinerds.net/index.php/Thread/75265-Transcoding-auf-Handy-Tablet-mit-Tvheadend-Raspberry-4-l%C3%A4uft-endlich/?postID=697981#post697981

Unfortunately MPEG-TS-Spawn-Profiles aren't supported by HTSP, as explained here by Jaroslav Kysela:
https://tvheadend.org/issues/4705#note-1

MPEG-TS-Spawn-Profiles seem to be the only way to get hw-accelerated transcoding to work on a RPi. Jay O tried to get hw-acceleration on RPis working via a built-in, non-spawn-profile, but didn't succeed:
https://tvheadend.org/boards/5/topics/46837?r=48086

That's why I'm now looking for good streaming clients, that support spawn-profiles.
On Android TVHClient seems to be the way to go. However there's no Google-/Android-TV version. And it seem there's none coming:
https://github.com/rsiebert/TVHClient/issues/127
Also sideloading the mobile app on google tv doesn't work.

I could of course just export an m3u from tvh and import that in some iptv app. But I would have to do this everytime something changed in my channel list. Also it'd be a bitch to get epg working from some external source (I think).

Does anybody have any ideas for a comfortable solution to stream from tvh to google tv using spawn profiles, yet not losing epg and automatic adaptation of the channel list?

In case anyone wonders why I need this: I'm on the road a lot and I like to bring my ccwgtv (Chromecast with Google TV) with me, but the bandwidth isn't always sufficient to stream live tv from home.

Im grateful for any hints

Cheers
aimaim