Landscape lighting help

I am new to Unreal, but keen to learn as much as I can. I am messing around with my first real level and I have encountered a problem with the lighting.

Basically when I load into the level the colours and lighting levels seem ok, but after a few seconds they become quite bright and almost white washed, is this maybe something to do with post process?
I am not too sure, any tips would get appreciated. Screenshots provided to provide a reference.

I have a Lightmass Importance Volume, Light source, Sky Sphere and Atmospheric Fog on the level.

I also have a simple day night cycle implemented - picture below

Before with "normal colours"

After - white wash

This is auto exposure. In your post-process volume, there should be a “min brightness” and “max brightness.” If you set these to be the same number (like 1 and 1), this will stop happening.

Thanks for your reply, I will give it a shot :slight_smile: