Beams doesnt blend properly with Atmosphere/Fog

[LenovoGaming (Jexvan)]

1. What do you want to achieve? Keep it simple and clear!
   Im using beams as trees and vegetation, and i want these beams can be render correctly at turned on fog / atmosphere. I dont know this is a bug render or am i missing something, is there any option?

2. What is the issue? Include screenshots / videos if possible!
   It seems that these beams is not affected by the fog. Maybe it is affected, but the visibility of its effect doesnt match with the fog conditions. I still havent find any solution, someone say this is caused by engine bugs.

3. Reasons why im using beams:
   I had to use beams for light graphics performance, also to hide a reduced mesh triangles that
   caused by performance render fidelity 3D mesh tree from a distance.

Left tree using beam, right tree not using beam (mesh detail level 01)

It looks fine without fog

Thanks, appreciated for any response.

[Lord_BradyRocks]

Are you saying your trees are beam attachment points?

Why are you using beams? Verse decals / meshes / etc ?

[LenovoGaming (Jexvan)]

Because theyre a bit far from the player, so i’am using beams instead of them (less lag than using mesh and player cant even see the detail because theyre a bit far away). Same like what ETS (Euro Truck Simulator) using, they use kind of decals/beams that facing to the player camera view for the vegetations that pretty far away from the player.

I only use tree mesh that near from player.

[LenovoGaming (Jexvan)]

Problem solved. I used Billboard GUI for vegetations instead Beams and they solved my issue although they were a bit shaky due to the scaling.