No nothing like your issue. All content is local here. Internet has nothing to do with it. I don’t have any Internet issues where the box randomly disconnects. What does appear that the issue is that it has something to do with the video being interlaced, and the Onn TV 4K Pro box not properly decoding interlaced videos.
Through the Channels app I did some additional testing. First off, I forced transcoding on the local network. This caused bad videos to start working, which makes sense because the video is being transcoded to a different format. I then turned off transcoding and set the video decoder in the Channels app to use the Software decoder instead of the Hardware decoder. This also caused the bad videos to start working since it was using the software decoder instead of the hardware decoder. The videos played very choppy with the software decoder, as expected, but they did work. All these signs point to the hardware decoder on the Onn TV 4K Pro box not being able to properly decode interlaced videos. I’m gonna see if there is some way to reach out to Onn about this issue.