Error using Reflector

Hello, I had to create a mirror effect for .glb models that include mirrors like the sink in the picture. For that I’m using the geometry of the specific part of the model that represent’s the mirror as the geometry for the new Reflector (instead of a predefined geometry like PlaneGeometry or CircleGeometry).
Everything is working fine, but I realized that the Reflector is not rendering propertly the closes area of the mirror, also when I zoom in a lot in the mirror makes a strange effect too.

I’m new with three.js and I never work before with reflectors, i couldn’t see that much info about it or people having similar errors, so maybe you could help me.