At the moment I'm using Gemfx 1.0.9.0 on fallout 4 with reshade hooked to it and I'm really happy with the results. The thing a lot of the games i try crash on start up with reshade hooked to Gemfx. I don't know what it is about the old gemfx features but as much as i try I can never do what it does in Reshade and I'm not exactly sure what it is I'm meant to be doing even to recreate them.
So here's a picture of what I mean. The first is only Reshade and the second is Reshade hooked to Gemfx (Realistic Shader) with reshade hooked to it.
Reshade only.
Reshade And the old Gemfx.
The way everything blends together with GEMFX is something I just cant seem to get in the reshade framework. The ambient light is the same as far as I'm aware and there's a lot of gaussian going on there but what else is it apart from those?