a couple more notes: If you remove the default nodes like I have done in this image they will be put back in and re-attached to the root and you'll have a grey background and lighting. Just leave them in the window but not attached and that problem is solved. Also, you might need to use the Post FX exposure settings to lighten or darken the image when you are done.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740