When I set the audio output to the Logitech g935 either there isn’t audio output or there is high pitch noise. This might be due to the fact that the Logitech app uses dts headphones x, but I tried to turn off surround sound (in G hub) same issue. Only fix is to close fx (turning it off resulted in the same issue)
The first thing you should try is uninstalling FxSound with specialized full uninstaller software, and then reinstalling it.
Other than that, I don’t think there’s much of a fix we can provide for such an issue.
This fixed it, Thanks for your help