A couple of resolutions for you:
1) Buy a GPS that supports your RV size. I use the Garmin RV 760LMT. I keep it mounted above the instrument display in my line of sight. This allows you to monitor your speed without taking your eyes off the road. You enter your length, width, height, and GVWR so that the GPS will avoid short, narrow, roads, etc.
2) I swapped out the Axxera with a Pioneer AVH-4100 NEX. It supports Apple Carplay (or the Android version), has a brighter display, supports marking on the camera displays to help gauge distance, etc.
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