Since this is a old old issue and seems like nothing is being done - I have been trying to get to the bottom of it. It definitely seems to be a issue with renderscale and TAA and maybe even LOD.
I noticed some other weird behaviors as well. This is at ENGM and ESSA but happens at any airport.
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This one shows that the light disappears and reappears as I am moving closer.
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This next one shows the lights disappearing as Im moving sideways, even the papi lights.
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These lights are, believe it or not, actually ON.
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On this last one there is something weird going on depending on angle, distance, lod or who knows?
Im not sure how much more clear evidence and information MSobo needs but it would sure be great if this could get some attention after 2 years. Can’t land airliners with lights not working on the ground y’know.