I’m such a dunce! I’ve been using MSFS on Xbox since it was launched. I have a 4k monitor setup with mouse and keyboard plugged into the Xbox.
I love it but was always envious of PC users having a smaller reduced interface rather than the text and windows that I had - thinking it was part of the Xbox requirements to be so big.
Well in general options/misc there is an interface scale slider… And I found it today! No more large text ATC boxes -
If only the VFR map text scaled as well…