I don’t seem to have the multiview app on my LG smart TV. I have checked and the software is up to date. Any ideas why I am not seeing it? 

We have been freezing and  video buffering and pixelation. ....we have fast enough internet we have been told but we need to fix speed of wifi through the tv...any help please.....our TV is a LG WEBos UJ6300 55inch

Al least here my WebOS TV isn't shown as option to stream!

I prefer to watch my video content from Plex Server + XPLAY (LG doesn't support 4k over DLNA, another stupid limitation) instead of Blu-ray player. I don't have a powerful computer to do transcoding, so when I buy a 4k blu-ray I simply remux it to mkv and add it to the Plex library - my files are very big, 50-60 GB per movie. Some of them have bitrate peaks which exceed 100mbps. My Plex box (linux) is capable of streaming higher bitrates, the TV itself is able to process these bitrates but is limited by the speed of the network adapter. The same movie would play without stuttering from USB3.0 (or even 2.0) external disk, but would stutter occasionally (>100mbps) when streamed from Plex library (using the same USB3.0 disk). It would be very nice to have at least the option to install a gigabit dongle on the TV. I have already tried with Trendnet TU3-ETG but the TV won't recognize it. Maybe with a future firmware update it will be possible, who knows...

Sorry for the late response but I recently bought an LG TV and am seeing the same issue with the BBC iPlayer app.  Often it will pause with a black screen and the buffering animation; sometimes it will recover but other times it gives up with a "Something went wrong playing this programme" message and error code 02100.   Once it has given the error message the only way I can get it to work again is to completely exit the iPlayer and restart it. I suspect a bug in the app.

Thanks for the prompt clarification.  

I have two very thin but very distinct parallel, vertical lines on the left of my screen. Is this a hardware or software problem?

Some addons it Kodi let you cast the content to smart TV.