I just loaded OSMC on a new pi 3. Used the OSMC windows installer to the SD card and chose the latest OSMC release. Added many Add-ons, most of which seem to work just fine, except HDHomerun. This problem exists both with the HDHomerun Add-on and using the UPNP playback under Video->files-HDHomerunTuner. I’ve tested this before using an older versions of OSMC and the pi 2 with no problems.
With the pi 3 I’ve loaded OSMC twice on two different SD cards. One with classic Kodi and the other with OSMC. Playback problems are the same on both
Problem detail: The playback is slow with the audio playback at almost normal planback speed but the video is lagging behind. Eventually they become so far apart the the video stops. It’s hard to close the program and get back to the home screen. I’ve tried to enable debug, recreate the problem, create a log and upload it. Went through the steps. not sure if it all worked