You should try 2020 on the same computer, and run it from the same folder as your 2021 version, and also make sure you are running bbw64.exe in each case. This would allow comparing apples to apples, since there are so many variables to consider with your different laptops. You don't need to 'uninstall' and reinstall the program each time - keep the 2020 .exe in the folder and rename it (bbw2020exe for example). It would be interesting to determine whether or not there is a difference, with the same settings and setup...

Andrew
PG Music Inc.