Strange Unity Projector Artifacts / Flickering when on Meshes

Hello everyone, I'm trying out the Unity projector but I'm noticing a strange problem - I'm getting this strange "flickering" that occurs on meshes when the projector is projecting on them. In the pic below, you can see the strange shading that is occurring, and when I move the projector, the light and dark spots flicker on and off (and which parts are light or dark also change).

Does anyone know why this is happening or how to fix it?