kalicolaTexture overlay on loading screens is a bug, with optimizations i forgot to clear up at the game start all internal textures. If you asked this.
r42Outline is a shadow rendering artifact of the original game. Don't know, may be in skyrimprefs.ini possible to setup shadow resolution/scale (not that 2048 or 4096, another). Also new parameters like bilateral filter in enbseries.ini helping to remove this partially (and shadow quality in game must be set to high or ultra, otherwise shadow resolution lower than screen resolution).
CruNcherQuote:
This is also one reason i guess it will take more time to load a Scene with ENB enabled the threads are not very well encapsulated and the Shaders get now compiled by ENB in the same time the Scene is loading (Engine is fighting with ENB over GPU resources)
No, it's just bad multithreading programming of engine, when gpu busy, loading times increase. When gpu is free, the same (i tried to boost +200 fps at loading and got over 5 minutes waiting, tired and terminated game).