I've created 3 shortcuts for fast switching audio outputs by hitting CTRL + ALT + Num1/Num2/Num3. These shortcuts are located at C:\Users\%USERNAME%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Sound so they can be listed on Start menu as an folder with these shortcuts inside. They use NirCmd to work and the target of them are:

C:\Users\%USERNAME%\PORTABLE\NirCmd\NirCmd.exe" setdefaultsounddevice AKG-K550
C:\Users\%USERNAME%\PORTABLE\NirCmd\NirCmd.exe" setdefaultsounddevice EDIFIER
C:\Users\%USERNAME%\PORTABLE\NirCmd\NirCmd.exe" setdefaultsounddevice HyperX

Every day, 1-3 times at day, they're resetting and don't work anymore, until I go to that folder where these shortcuts are, choose properties of each of them and apply them again. It was working excellent for some month but now they're just struggling. Anyone know what could it be? No big changes to the PC. It started to behave like that last week and I'm pissed of now as I need to apply it every day