Rendering an audio file in EDIT mode takes a long time.

The rendering time will be longer for tracks that have been analyzed dynamically, or if the beatgrid has been partially adjusted using the GRID panel. This is because the tracks beatgrids are no longer static.

You have the option to analyze tracks using Normal analysis, ensuring static beatgrids and faster and the rendering times.

Please be aware that this can compromise the beatgrids accuracy on tracks that actually require dynamic analyzing.