While the scenery itself is OK, lights are blurry on ultra wide resolutions (like 5900x1080 or 3840x960) no matter if nVidia surround with multiple display is used (my case) or just one ultra wide display (reported by other users on Avsim forum).
Seems like a bug - while scenery is adapting to resolution changes, the lights are not. Seems like the lights work always under 1920x1080 resolution.
I tried to change every imaginable graphics option: DoF, bloom, render scaling, ambient occlusion - the issue reamains. I wonder if this applies to ultrawide (e.g. 5900x1080) resolutions only or to 4k as well (I don’t have 4k display to check).
The issue is not related to apparent “stretching” on the far edges on the side displays, the lights are blurry even on the centre of the centre screen.
nVidia GTS 1070Ti with nVidia surround 455.56 driver
The higher the resolution the issue is more visible: