Thank you so much for your help. I'll study it carefully. Before your suggestions, I was looking through the program's help and found this:

Accelerate RealTracks Generation:

This acceleration feature works automatically and uses CPU resources during playback. If you have a multi-core computer, you might not notice it, as it will use cores other than the main Band-in-a-Box thread. If you have an older computer, with limited memory, a slow hard drive, etc., or if you notice audio glitches during playback, you can disable this feature to reduce CPU usage.
Tempo/Pitch Stretching Quality (Reduce on Slow Computers): This allows you to select the quality of the tempo and pitch stretching. You can select "High" if you have a fast computer, but you should select "Low" if you have a slow computer and hear dropouts during playback.
Use +/- RealTracks for Generation: This option is usually disabled, but enable it if you have a slow computer.
I tried selecting High stretching quality and it worked even worse, so I tried again with Low and the result improved dramatically. The setting is in a Realtracks/Settings dialog box and is easily overlooked, considering the radically dramatic effect it has on audio regeneration. Let me know what you think.
Thanks again.

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Last edited by Juanfra Perez; 11/10/25 09:13 AM.