>>287069265
The issue is that maps will never be set up right all the time- it's one thing to have a map use intensity 10 lighting that makes half of the popular shaders glow, and another to just look weird in shadows when a suboptimal light source is nearby
If you were to change your toonramp to a completely smooth 0-100 transition, like pic is what I use and it rarely has poor looking shadows, at the cost of the sharp edge you want- although most people did away with it back in 2018ish with the death of whatever that one basic bitch shader was called, due to the very issue you're encountering now