Pasar De Jpg A Pdf

We recently replaced our Roku 3 with a Roku Ultra. The Roku 3 was able to send a picture to our widescreen TV that would fill the screen. The Ultra only sends a picture that is compressed horizontally. When setting up the Ultra using the HDMI cable that came with it, the Ultra identified our TV as 1080 with HDMI 1.4 and correctly determined that we do not have 4k. It appears the Ultra only uses HDMI 2.2. Do we need to purchase a new TV in order to have a normal picture? Is there a setting I can change to display the correct size image?