Literally a few days ago I updated the osmc on my Vero 4K+. Since then when playing all videos I have a strange problem. I can’t even describe it. Like an interlaced or refresh problem. The picture is divided into 2 or 3 parts and it is impossible to watch. In this picture you can see it, and in the filmed video.
Did you do a clean install or did you jump from that old Kodi version all the way to current with updates? If the latter you probably need to do a clean install. If this was a clean install you should provide debug logs and mediainfo for that file in a new thread.
I known that my TV is quite old , but no, 720p is not native to my display. Should be 1080p.
I changed only the setting: settings>player>video>adjust display refresh rate to off and it’s helped. Without modifying resolution.
Now every video runs smoothly.
Then I restore full backup (add-ons, settings, etc) and overwrite current settings. Adjust only this one setting of settings>player>video>adjust display refresh rate to off and checked everything again.
I remember in the early days of flat screen TV’s it being a thing (in the United States at least) that there existed 720p native displays on the low end but they supported input of 1080i at the very least to comply with ATSC regulations. I suspect what is going on here is that Kodi thinks your TV supports some display mode that it doesn’t and that is what is causing the screen tearing. You can keep running like this or if you wanted you could also make a whitelist excluding any problematic modes…
From the EDID, I would guess the panel is indeed 720p but anyway it’s indicated the preferred mode is 1080p and the maximum HDMI clock frequency is high enough to handle that. I can’t think why you would see those effects. Normally playing a 24Hz stream with a 1080p60 video mode could cause issues. But if you’ve found something that works, good.