I had the same problems and uninstalled it. I hate this constant battle between Reshade and Freestyle, but that’s a whole nother subject. I read in a thread here Some reshade pics something to try.
TLDR it said to remove colorsort.fx from the reshade-shaders subfolder and to remove references to colorsort.fx from reshadepreset.ini. I’m torn between trying Reshade vs Freestyle again, but admittedly if I can get it to work I might not have to worry about future NVidia driver releases that might break Freestyle again - but surely that won’t ever happen, right? 