I helped one of my club members to solve this exact issue. He purchased a new Dell XPS13 laptop loaded with Windows 11. The culprit ended up being the Maxx audio software that came installed on the laptop. When I disabled Maxx audio the Digirig worked perfectly. I am told that HP has a similar audio contouring app preinstalled on their laptops. This will most likely be the cause of your problem, assuming that everything else is configured properly. I can confirm that every ham radio application that I have tried works fine with Windows 11, including anything that uses a Digirig as a sound card.