Hi, I really love these shaders!
But there's one issue that I run into with a few of them (and this seems to be a common problem with advanced CRT shaders - CRT Royale has it as well). It tends to occur on games from the PSX generation (or later) that have darker colour palettes; Final Fantasy VII and Xenogears are classic examples of this.
Note the blobs of black and other distorted colours around the floor at the bottom and around the top of the ladder and adjacent wall (it's most visible if you zoom in). The top pic uses the Netrunner shader, and a shaderless version of this scene is below (there are a few compression artifacts now that I look at it, but you can still easily see the colour distortion):
You can also see it in this pic if you zoom in on the lower side of Aps and the wall behind him (this is CRT Royale):
In my experience, about half of advanced CRT shaders have this problem. I'm really curious to know exactly what causes it and whether there's any kind of satisfactory fix for the shaders that have it.
If it helps, I've made a couple of observations:
1. The shaders that don't have this problem usually have multiple blur filters near the beginning. For example, they often begin with linearize, blur10x10shared, blur9x9, blur10x10shared as their first four filters.
2. It can be eliminated in the shaders that have it, but only by turning the contrast down and the brightness up. That obviously brings its own problems.
For now we can all use the shaders that don't have the issue, but it would be very interesting to know why the issue exists at all.