Hey again hypersapien,
I know you mentioned you toggled some switched in the Post Process Volume, but try entering the values you see in the images.
Be sure your Post Process Volume is set to Unbound
This setting can be toggled within the ‘Post Process Volume’ section of the actor.
Default Exposure
Here is what the default values of the Post Process Volume look like.
Desired Exposure
If after double checking this and you still see no change, please let me know and we can continue to troubleshoot.
Cheers,

