Hi @TT5889,
Thanks for this inquiry and welcome to the Roku Community!
We that you need help in getting back to 1080p display resolution, and we can help. You can refer to our support article, which provides sufficient information on how to change the display type on your Roku streaming player.
Let us know if you have further questions.
Regards,
Janadee
Nadee K.
Roku Community Moderator