Hey folks. Just a heads up about my recent problems which are similar to what OP is getting. I have been running Vero 4K through my Denon receiver which is connected to my Sony 65X900E TV since last year and everything was working fine with 4K HDR/HEVC content until the most recent update. Now I’m getting similar problems as OP (screen going black a few seconds, losing input totally, have to reboot Vero 4K, skippings, etc). I even tried changing my HDMI cable just in case for another high bandwidth one (Amazon Basics). For now I’m using Kodi on my Shield TV (thank Goodness I got an alternative) but hopefully there will be a fix in next release. I can’t run Vero 4K directly from my TV, it has to be through my receiver although if you guys need me to do a test a I could set it up directly to the TV temporarily.
I also confirm that I can usually play 4K HDR after reboot of Vero 4K, but it stops working if I change input on my receiver and come back to Vero 4K input. Sometimes Kodi reverts back to 1080p, so there’s some weird stuff going on.