odd lighter ghost frame in topleft corner -why?

[NotKinkyEnough]

rebuilding MO2 load up with 1.597 base : it was going well but I have done something stupid and can not work out what 

When I have enb toggles on, in the top left of my screen, is a microcosm of the main image but just as a glow where the area would be lighter in the main frame. Anywhere which would not be in shadow makes the main image lighter in that area only. It's not easy to see in screenshots. In motion it is clear. 
I have been going mad disabling things all over trying to get it to work right. Even removal and reinstalled enb with no preset.  

It is 1/16 of the screen area, 1/4 along and 1/4 down.

Can anyone tell me what I might be able to change to make this go away and work right?

[pututo]

Take the map out, lay it on a flat surface, lay a towel on top, and iron it on low heat to get the creases out. it will look 100 times better.