Inconsistent Burns on Ortur Lasermaster 2

I was curious if anyone else has encountered this issue. I have been burning a lot of the same project repeatedly using the same settings (only changing a name on it). It is basically pieces of wood that are painted white and then etching the words out through the paint and into the wood. I can go through and do quite a few that work fine, everything seems crisp and they look great. Then suddenly I go to do one and I start getting results like in the pictures. Have you guys run into similar issues, and if so, what did you do to resolve them?


Edit: Here are the settings that might be relevant:

3
4