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.
I keep several IPTV news streams going at once. 4+ is good for me.