I have multiple units that freeze when watching a device connected to hdmi. I have to restart the unit for it to go back to normal. It works fine for a few days then goes then freeze again.
i had the same problem what i did was /play with the box settings and kodi settings now it works better but it still freezes from time to time when i play any 1080p or HD movies / 720p and SD movies it plays just fine so i suggest you to play with settings.
I think you hay have misread. The issue is when im watching a device like my cable box. The hdmi in is the problem. Dont use kodi anymore.