That’s strange. I have used Ardour on Windows for years and have not encountered that. However, I have also never tried to use another audio program or web browser while using Ardour because I don’t want other programs running while tracking. After shutting Ardour down, though, I can listen to music or watch videos without restarting my computer. I use the ASIO driver provided by my interface, a UMC1820. What audio backend are you using? Do you use the computer’s sound card for general use and an audio interface just for Ardour? I use my UMC1820 for everything, no switching back and forth, so maybe that is why I have not encountered problems.