Freezing is in my limited experience down to the providers‘ servers, blocking and the fact that E2 receivers are not built for IPTV stream recovery.... expecting anything else from an E2 receiver is being over optimistic.
There are other devices that will handle IPTV better ....... but still depend on the providers servers delivering consistent streams.
Gigablue Quad 4K & UE 4K
.........FBC Tuners:
------------------> GT-Sat unicable LNB to 1.5M dish(28.2E)
------------------> Gigablue unicable LNB to 80 cm dish(19.2E)
.......................> FBC & DVB-S2X into 90cm dish (27.5W) Opticum robust Unicable LNB
AX HD61, Edision Osmio 4K+, Zgemma H9Combo, Octagon SF8008 , gbtrio4k, h9se using unicable ports
Zgemma H9 C/S into Giga4K