Question
How do I resolve this unwanted blur effect while applying high contrast effects?

I’ve been compositing this project for a bit and I’ve been running into problems. One of them is this blur that happens when I remove parts of the masks. I use a soft-edge brush to remove the parts of the subject. If I use the hard-edge, it will give a bizarre result. Not all of the time this happens but this is often. Can anyone help me out with this particular issue?
