Hover preview or deliberate preview: matching the interruption to the task

I'm part of the GJ File Manager team. A folder full of similar screenshots creates two different tasks: finding the right image, and opening it to do actual work. A preview should help with the first without repeatedly interrupting the second.

A small setup experiment for GJ File Manager on Mac:

1. Start in a sample folder with supported images. Enable hover preview and pause over one file. Compare the content before double-clicking into its associated app.

2. Move through the folder at your normal pace. If previews appear while you are only crossing the file list, increase the hover delay. If that still feels distracting, turn hover preview off and use a deliberate Quick Look action when you need it.

3. In settings, check the per-type preview switches and size limits. An absent preview can be a format or size limitation; it is not proof that the file is empty or damaged. Large or protected files may need their associated app.

4. Keep the final check separate: open the candidate in the app that will actually use it before sending or editing it. A quick preview is for identification, not a guarantee of full format compatibility.

This is a choice of interaction, not a claim that hover is faster for everyone. When reviewing a folder, what makes a preview disruptive for you: appearing too soon, obscuring filenames, or behaving differently across file types? Specific examples would help us evaluate the defaults.