Scanning is throttled so it stays responsive during normal work, and the heavier normals check is automatically skipped on extremely dense meshes above an internal face limit. If you work with very heavy scenes, you can disable individual checks you don't need, limit scanning to selected objects only, or pause monitoring entirely with one click.

Yes. Click the status badge in the viewport (or the panel button) to toggle monitoring on or off at any time. When it's off it uses no processing.

No. Detection is read-only and never changes your geometry on its own. Fixes only run when you press a fix button, and every fix is fully undoable using Blender's native operators.

Mesh Check is built for live, in-viewport feedback while you model — issues appear exactly where they are, in 3D, color-coded and grouped per mesh, with instant selection and one-click fixes across many objects. It's a continuous workflow tool, not a one-off report you have to run manually.

You get targeted fix buttons for the issues on your current selection, plus Fix All Selected and Fix All in Scene for batch cleanup. Every fix also shows the manual Blender equivalent, so you can learn to do it yourself without the add-on.

Yes. It inspects all visible meshes (or only the selected ones, if you prefer), lists issues per object by name, and can fix every affected mesh in the scene in a single pass.

Yes. The add-on is licensed under the GPL (as required for Blender add-ons) and there are no restrictions on the artwork or projects you create with it. Use it freely in personal and commercial work.