I have a 144Hz TCL gaming TV connected to my Xbox Series X via HDMI 2.1, which works perfectly. I connect my Homatics r 4k plus box to one of the HDMI ports that supports 4K @ 60Hz. Because I’ve tried plugging the IPTV box into the 120Hz HDMI port, but it doesn’t seem to work well there. For whatever reason, the Homatics box runs much more reliably on the 60Hz port.
But after some testing, I’ve concluded that it's a provider issue, especially during high-traffic events like PPVs or weekend football performance noticeably drops on (Astro 4k, now sports 4k, TNT) Not consistent at all....