Brief description of the issue: I have the December update installed and was flying in Ultra mode for the below screenshots. Compared to this video which shows the same location (Lake District in the UK), my scenery looks extremely generic.
Provide Screenshot(s)/video(s) of the issue encountered:
I had to Google Lake District because I had no idea where this area is.
Anyway, I couldn’t reproduce screenshots on Ultra settings because my Specs are quite low.
I did make some screenshots of the area (I think) you requested.
Sometimes, if your internet service provider has a problem and you bandwith becomes too low for the sim, you get briefly the message “low bandwith, going to offline mode” or something like that. Its brief and clears itself, so, if you are not looking at it, you may not know it happened.
It happened to me several times before with my previous ISP, and like you, was puzzled because my FS2020 suddenly looked FSX-like.
As explained by @cptpies just tuning on Bing maps again solves the problem.