As far as I see on the screenshot - IPTV works via udpxy (you can see it in the process list). It’s the most simple way to convert multicast to unicast so that it transfers over wifi at a maximum speed. And it’s exactly what a couple of MikroTik users ask to integrate into RouterOS during some (long) period of time but what MikroTik developers ignore. Thanks to chipxsd for great example how it should work if wireless router doesn’t support native multicast-to-unicast translation like other wifi vendors do! 