I use Airspy R2s and Minis (and RTL / Nooelec 820T2s) with UT2 - no issues. Upgraded the boxes with Win 11, and still no issues. Clearly there is an issue with your system, or the way you are configuring UT2. You can use Device Manager to remove the Airspy device and let it be rediscovered, but I doubt this is your issue. A radical step would be to reset the PC to ensure a clean OS install. If you still have issues after that, It's your hardware, or the way you are setting up UT2.