In FL Studio, ensure "Auto Close Device" is checked in Audio Settings. This allows the DAW to release the driver when you minimize FL Studio, letting you watch YouTube seamlessly, then grabs it back when you click back into FL Studio.
⚠️ Never download "FL Studio ASIO driver" from third-party DLL or driver websites. Those are often malware. Always get it via the official FL Studio installer. Fl Studio Asio Driver Download Windows