I set up STBEmu for an IPTV service on an android box (M9S Pro) for my mom so she can watch French Canadian channels. The problem is many channels freeze often and it's extremely annoying. I tried it on other IPTV services and get mostly the same results. I'm guessing the box is probably the problem.
So I was thinking about getting a Nvidia Shield TV Pro and was wondering; does anyone owning one have the freezing issue on channels? Does it freeze often?
I love my Shield Pro.... but your problem is either the device, or the source. If it's the device then there's a chance switching to a Shield could work (although I just googled the specs of that box, it looks pretty good, IMO) If the source you were trying is the same on both IPTV services, it's not surprising both had the same problem, and the Shield will not fix this. The other "source" variable, is your Internet. What is your down speed, are you being throttled by your provider or VPN, etc.
If you just want to throw money at it, by all means.. get a Shield and see if it fixes it... but there's a lot of variables here.