Have got a solution for the missing Anti Aliasing and Level of Detail.
Read in other forums that there is a file called UserCfg.opt. It can be found in the local cache folder of the flight simulator packages folder (for MS store or game pass installation).
When you set Sharpen to 0 in this file, Anti-Aliasing is working perfect again. This setting is 1 by default and this over-sharpening seems to destroy the Anti-Aliasing.
When you set LoDFactor in the sections Terrain and ObjectsLoD to a value between 2.000000 and 9.000000 the Details return. 9.000000 is the max value and shows all trees and details even from high heights.
Set this file to write-protect in Windows Explorer to avoid that your changes are reverted.
Trade Off is that the loading times increase and the FPS decrease a little. But it looks as great as in the first versions again!
And another great fix is the live Metar Weather plugin from
Works perfect! Real live weather, no more over-lightnings and rain animations are back.