Strange rendering of mountain tops

Hello. I had created several very high resolution maps of the north west highlands of Scotland. They were extremely high resolution down to grid square 14, AFS level 15,, and zoom level 19. They were all working perfectly for months until recently. It is quite difficult to describe the issue, but I will try. The very tops of the mountains now display as jagged straight edges almost like the polygons are now not being rendered correctly. They used to conform exactly to the correct profile of the terrain. The weird thing is though that the high details are still visible ie you can pick out mountain paths and small rocks it is purely the top and ridges of the mountains that are not being displayed accurately as they were before. It is only noticeable when you fly really close to the tops and ridges. From a distance they seem to blend and look normal, ie rounded and natural. Does anyone have an idea what has changed to cause this? It is very frustrating as I put a lot of effort into this and it was very high quality up until recently

Thanks for the fast response Jet-Pack. I seem to have resolved the issue. Recently I uninstalled all the scenery DLC to save on hard-drive space. It looks as though the issue may have been related to that. Perhaps there is a conflict with the global scenery and user created scenery in certain situations (specifically mountain tops/ridges)? I did not get a chance to screenshot as I am in VR but if you can imagine the top of a mountain where the peak is very geometric straight lines and pyramid like but the sides of the mountain correctly showed my hi-res scenery. Now, after re-installing the scenery DLC the mountain is normal with a rounded natural peak as it should be.

Now Everything looks as amazing as it did before.

Jet-Pack I am having more issues with user scenery I am afraid. As an example I had created full hi-res scenery of Ibiza and Formentera which is available to download free for everyone on Flight sim.org. This is used regularly by myself but now there is an issue, let me explain. When I load this location my entire field of view would appear in the hi-res imagery I had created, basically for as far as I could see. Of course as I got closer to a certain point the resolution would increase to the maximum I had created. Now what is happening is everything beyond about 300m is ultra low res mush with zero features. Only when I get within roughly 300m does the image improve but then it returns to featureless mush as I move away. This has never happened before with any user created content I possess. Has something changed in the way FS4 deals with user content?

Ok that might be the issue, I did not create all levels

Map 9 - Levels 9,11,12,13

Map 14 - Level 15

It just seems more noticeable that It did before which is why I was asking if anything had fundamentally changed in the programme?

Thanks again for your help. It is very much appreciated.