I too am having this problem. It only began a couple of weeks ago but, as far as I'm concerned, renders iView unusable. I also tried the iView app reinstall. My TV also indicates the firmware is up to date. I'm trying the hard reboot now but don't hold out much hope as, as already mentioned by someone, we've all had experience of these generic troubleshooting protocols that basically shift blame, effort and time-suck from provider to customer, and fail to solve anything. I too have no intention of doing a factory reset, as no other app is now or has ever caused this issue except for once, through a speed-limited service on a low-RAM receiver.
Although there cannot possibly now be a low-bandwidth issue through my current FTTP service, this coincidence does make me wonder if ABC is transmitting a non-variable high-resolution signal that surpasses the TV's reception capability. Sorry, idk the proper technical language. The point is it's horrible and we can't access our taxpayer-funded service because of it. Auntie ABC, you need to fix this. And so does LG. Thanks.
