New to Bolt and 4k

Hi all,

Just recently upgraded from an older LCD TV and Series 2 to a Sony TV with the Bolt.

Is there a guide to help out with the video settings? I consider myself tech savvy but am having a problem with the video settings.
Do I set the Tivo to automatic settings? I have been messing around with the video settings on the TV and Tivo for a while now and I am trying to view a 4K show from Amazon Prime but the Tivo display shows 1080p when the show is streaming. I meet the requirements for my equipment and HDMI cable but I don't think I have the video settings correct. On my Sony TV you can select which HDMI ports you want to make 4K, they call it 'enchanced' HDMI. That took me a while to figure out....

So I set the port the bolt is attached to, HDMI 1, and then went back to the video settings on the bolt. When it cycles through the test it now picks up that the TV is 2160p.
So now the display on the TV shows the 3840x2160 format but the info on the TIVO still shows 1080p when streaming the 4K show. It looks great but where should I see the indication that it is in 4K?

Thanks in advance,

Alex