So just to put this out there. I’ve been testing single-board-computers running Android and Linux and streaming multiple IPTV streams at the same time and the Fire TV (I have the 4K Max) beats the Raspberry Pi 4, Odroid N2 + & Intel NUC 7 i5 CPU w/ Intel GPU). I know that they’re cheap as hell but they actually perform better in my specific use case than other Android or Linux platforms. I can stream 5 or 6 1080 IPTV streams simultaneously on the Fire TV, while 3 or 4 is the max on the others.
22.04 still isn’t FIPS validated yet, so if you need FIPS with Ubuntu pro, the most recent LTS distro you can get is 20.04. That’s why 20.04 is still popular.