alot of these freezing or disconnecting issues can be attributed to networking.
Some routers have been known not to work with some iptv boxes. I had a certain name brand router at one time and one iptv stb I have would not connect using that router, it would connect fine with a different router thou. Other boxes would connect fine with either routers.
Some routers will show freezing while other routers on same home network setup show no freezing.
Setting priorities with Ethernet connections if you have a few connected, is also a fix.
Some dual band WiFi routers will name the 5g band as one name and then have the 2.4g band named something else.This matters when the wifi is setup to optimize a connection (meaning the router will switch back and forth between 2.4g and 5g ... (which ever is giving the best signal at any current time).
Then on the same point, the WiFi bands can be named the same name. This is set so that optimizing works like it should.
Some dual band routers will also have something called Smartsteering or perhaps a name similar. This is also a function of optimizing.
If you turn SmartSteering to On, then both WiFi bands must have the same name. Turning it Off then the WiFi bands should have different names, but with that Off it should not matter about the names, because the WiFi on the box is connected to only one anyway (unless you connect both bands thru your iptv boxes wifi connection setup menu.
Which brings me to another point about all this. If Smart Steering is On, but on your receiver you have only the 2.5g set as connected but not the 5g band, then this may cause issues too as the router may be trying to switch to 5g or back to 2.4g , depending on the optimizing thing.
I can tell you that the Dual band wifi on the Z8 I have here did play havoc with this z8 and I ended upturning the router's SmartSteering off and connected to 2.4g only and issues went away.
There are many things with home networking that can be responsible for freezing/disconnecting issues)
And also the secondary DNS or even Primary DNS is another thing to consider.
China and Russia among other countries, have been attempting to close their internet communications so as to isolate it to their own countries only and not the rest of the world. One thing they are looking at is DNS ...
This is nothing to do with us, and I am just adding this to show you how important DNS can be.
BTW, China may be able to isolate themselves as they do not have many access points that internet actually gets into their country. But Russia, for get it. They have 1000s of access points so the governments of Russia are fighting a loosing battle, I would think
and we carry on .....