How do I work around this clash between Forward Shading and Exponential Height Fog?

Development Rendering
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1

Hello,

I am currently making a game which uses Exponential Height Fog to give an underwater appearance, but this tanks the FPS unless I use forward shading.

However when I the fog is visible, lighting on objects begins to change suddenly whenever the camera passes the diagonal axis’. Is this a known issue that can be overcome?

Some further information:

  • This is basically a blank level with nothing but player controls, an FPS counter and some textures, with an exponential height fog, sky atmosphere, a directional light and a basic post processing actor

  • Hiding the Post Processing Volume and Sky Atmosphere in the scene doesn’t change this

Thanks in advance!

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Bump, perhaps this is in the wrong area of the forum, if so mods please inform me