Go to the Build tab in Encore and change the Format (top left) from DVD to Blu-ray.
Well, turns out that the DVD player was acting goofy....Took the disks I made to another bluray player and they were fine as far as the playback resolution.
The sony bluray player I am using wasnt automatically changing to 1080i....I set it manually and all is OK.
Not sure why I had to change it manually though....the second bluray player I tried is the same exact model and had no issues....
>second bluray player I tried is the same exact model
Do the serial number "plates" on the two players show the same build date?
What MAY have happened is they were built on different dates... with slightly different firmware
You might check to see if there is a firmware update for your player