This is my preferred route for multiroom TV as well. Problem is it is broken with the current Kodi 20.5 (and applicable E2 PVR).
Spent a few hours earlier today hacking a cheap android TV box to see if I could confirm what I saw with kodi on a windows 11 laptop yesterday. Uninstalled the Kodi app on the android box and then installed Kodi 19.5 to match the downgraded windows version (it was a pain to do). Same result, 19.5 works perfectly, 20.5 crashes when kodi starts the PVR.