I must have something else going on.
Looking at the same area in airplane mode on a saved map, and then connected, there is no comparison in the quality of the detail.
The airplane mode is much, much worse.
I tried to upload screen shots to show you (both png and jpg) with no luck. Also I couldn't cut and paste.
So now, my one question went to two.
How do I post a screenshot? and
What am I doing that causes a loss of detail on saved maps?