The issue you’re describing is not the same one, however it could be related as it’s yet another of the LOD issues introduced in more recent patches. I would recommend upvoting the following threads.
There’s a bug in USA Update.
Try Yosemite El Capitan.
Fly towards it, and you will notice that it shifts up and down as you get closer to it.
Happened to chimney rock too. No mods installed. Seems like whatever they did, the terrain or custom models shift position according to LOD. Already cleaned rolling cache too, increased LOD’s, etc. It’s just an issue with the landmarks.
Asobo, I think you should check all the landmarks.
https://forums.flightsimulator.com/t/poi-very-late-rendering-draw-pop-in-solution-for-asobo-to-fix-in-this-thread/368281
The landmark shifting could be caused by the underlying terrain as well.