can't get Android auto to use fullsceen on Joying

[toecheese]

Is there a way to get Android Auto to display fullscreen on the JY-HQS01N4G-2?  Right now it only uses the middle of the screen, with black on both sides.  I've set Android Auto on the phone setting to the highest -  "use up to 1080p"

Running Android 10 on both phone and head unit.