After SU3 there is suddenly a big step in the middle of runway 12/30. There are no polygons or other scenery item placed near there so I do not know what is causing it, hence am unable to fix it. There is one big polygon covering the entire airport to flatten it and some smaller ones scattered about, but none on or near the runway. What should I be looking for? Scenery here: https://flightsim.to/file/92909/enry-rygge
Hello,
I checked your scenery in SU3 and SU4 (flighting) and can’t see any step on the runway.
Can you share with us some screenshoots ?
Is your community folder only have this package in it ?
This is what I see :
[SU3]
[SU4]
Also I moved your topic in [MSFS 2024] Questions & Community Discussions as it’s not a MSFS2020 package
Regards,
Boris
Hello Boris. Sorry about the wrong category.
A rather long-winded answer to follow.
I went in and changed the priority for the large polygon covering the entire airport, and that seemed to fix the big step. Even though there are no competing polygons there. BUT I still have issues with flattening the area for the airport. Even though there is one big polygon with terraforming and a big falloff to avoid steep dropoffs outside the airport area I cannot get the runway flat. It is a rollercoaster. How come the area is not flat when there is a terraforming polygon covering all of it? And how come what I see in the editor is not what I see when I spawn in to the airport in sim? I have to place the terminal building well into the ground in the editor to avoid it floating in the air when I am in the sim. And no, snap to ground does not help (it snaps to ground in the editor, and floats when in the sim). Tried a second terraform polygon with higher priority covering just the runway, to flatten it, but as the ground around the whole airport moves down when I load into the sim it is very difficult to align the two polygons in the editor (on the Z axis) to avoid steep drop-offs along the runway.
This should have taken 5 minutes to fix, but it took me all of last night. I gave up on scenery creation (at least bigger projects like this) earlier this year because of inconsistencies like this, and because of the huge amount of extra work that has to be done because of the rather aggressive LOD system (that I have no idea how to implement for ENRY so it disappears once you move away a short distance), but as this scenery was already out there and someone commented on the step in the runway, I felt I had to try to fix it.
My trick to runway terraforming is usually to set runway terraforming falloff to 1m, and then instead add a rectangle to cover the whole runway. Add a terraforming profile to it that matches the runway profile, set the falloff to something relatively large and set priority 11. Priority 11 overrides the runway terraforming. The reason I do it this way is because adding a terraforming profile directly in runway properties makes it very much like a rollercoaster, while rectangle terraforming does not have this issue.
( I disable airport flatten and other terraforming polygons when doing this).
I get only parts of that explanation. I know how to add a rectangle. And I did try that with a falloff of 250, placing the outer edge of the falloff outside the airport area. But still there is a harsh jagged edge where the falloff begins closer to the runway. This meant I had to place the beginning of the falloff outside the airport area to make everything flat. But it does work 
I’ll have to read the SDK manual to know how to set up a runway profile, but it looks to me like it lets you have different elevations on either end of the runway. With ENRY that is just 1 m IRL.
I was going to just quickly set up a project for ENRY and show exactly what I would do, but when I try to add a runway there, the sim crashes. Odd bug.
The heightdata there seems good, though, except for the dump on the eastern parallel taxiway.
My plan would have been to only use two terraforming things: One rectangle to cover the runway, with a profile matching the laserscanned elevation from the Norwegian hoydedata website, maybe 50 meter falloff to not ruin the nice elevation around it (like the runway being higher up than the mil side taxiways), and one small rectangle covering part of the eastern taxiway near the firestation.
The rest of the airport looks pretty good without any flattening or terraforming, I think?
Edit: Here’s an example from ENLK - Leknes.
Setting the runway profile on the actual runway properties is not good. It gives you a bumpy runway even when you use the exact same elevation profile as on the rectangle, that works fine.
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Not exactly flat that runway hey. Might give it a go with this profile later today, but seeing as I have given up on creating more LODs for the terminal, meaning it is invisible from either end of the runway, putting a lot of work into the rest of the airport is a bit wasted. So getting the runway corrected is probably as far as I can go with it.
Tried the profile editor. Is there really no way to import elevation data? How much work would that be at a large airport with multiple runways! The weird way developer mode is acting I can’t get this done. The rectangle is floating in the air, it moves when I translate the developer camera (very strange) and also ground level changes when I load the scenery into the sim, meaning it is impossible to make accurate adjustments. Everything looks right in developer mode, and when I restart the sim, with the scenery in my community folder, ground level is different. And not by small amounts. I estimate 1 meter difference. Meaning even a model with snap to ground floats in mid air. Very frustrating.