As of the latest update the program is generating an instant black screen the moment it's on, with any scaling method and any amount of framegen.
LSFG prior to this update did not have this issue. FO4 is running Borderless Window.
Running 6900XT and 5800X3D and up until the update, all worked fine.
I'm willing to dedicate time to testing and helping to find this issue.
Notable is that when I tab out of Fallout 4, the black screen disappears, but when I tab in, it's back. The game is running in the background, so nothing is affected there.