PSX Pickup Shader

This shader looks amazing, but I’ve discovered a rather glaring issue with it; the further out in the world you place certain objects with this shader attached, the more intense the jitter becomes, regardless of whether you have “Use Screen Resolution” checked or a smaller/larger value for “Custom Pixel Lock Res”. I found that changing the render mode from world_vertex_coords to skip_vertex_transform and using the vertex snapping code from this shader fixes the issue but breaks the lighting. I’ve tried moving all three objects in the demo scene, and the red gem and chocolate piece are affected, while the green crystal is not. Here’s a video showcasing what goes wrong.