I am running the latest stable version of OSMC on a Rpi3. My reliable old (2009) Samsung 43" Plasma finally died a peaceful death last week.
The good news is that I was able to upgrade from 720 with the Samsung to 4k with a Vizio 50" D-Series.
Everything seems just fine. Except…
…the CEC with the Vizio isn’t nearly as good as the Samsung was. The Vizio remote will handle all of the normal “viewing” commands, but some of the setup/maintenance functions don’t seem to be accessible. Not a big deal, I just use the bluetooth keyboard I have for those occasional tasks. Not really worth mapping the remote over.
But I have noticed a very perceptible lag in processing commands from the remote at times. Sometimes it even just locks up and I have to unplug the Rpi to release it.
The only CEC control in the Vizio menu simply enables/disables it. My Vizio’s model number is D50-F1 and it’s running V. 1.14.6.
Any tweaks I can do to improve the CEC response?