To solve this, check Hide DS4 in the settings, if you see a warning in the log/text on the bottom, that means you must close said game or client that causes the conflict and reconnect the controller.

If you have used SCP's tool in the past, you may need to uninstall the drivers to use the DS4 with bluetooth.A windows will pop up showing how to install the driver, if not, go to settings and click 'Controller/Driver Setup'.