(Update Note: This little trick will not work if you’re on SU4 beta)
Well, I believe I may have narrowed down the problem to a Directx 12 issue. My solution is not elegant but simply a test of my theory. The idea was to try and convert the Directx commands to Vulkan so I downloaded the following 2 archives.
dxvk-2.3.tar: Releases · doitsujin/dxvk · GitHub
vkd3d-proton-2.10.tar: GitHub - HansKristian-Work/vkd3d-proton: Fork of VKD3D. Development branches for Proton's Direct3D 12 implementation.
After extraction I copied the files from the x64 folders of each (5 from the dxvk archive and 2 from the vkd3d archive) to the Microsoft Flight Simulator 2024\Content folder. Then started up the sim. On startup the screen did flicker a few times then turned to black and also didn’t show the opening video but it finally got to the start screen and I was able to start a flight. The night light artifacts were gone although it introduced a bunch of daytime artifacts but it was just a test and not meant to be a solution I just wanted to see the impact of not using directx would have.
Before:
After:
btw… The same Adrenaline driver in both cases 25.6.3
I would be interested to hear if anyone else wants to give it a shot.
To get back to normal just delete the 7 files from the content folder.
d3d8.dll
d3d9.dll
d3d10core.dll
d3d11.dll
d3d12.dll
d3d12core.dll
dxgi.dll