If you are an Fl studio user or u have installed Asio-4-all audio drivers you must either close fl studio and reload the page on a new window(not refresh tab) or make the asio -4 all latency higher than 512 samples..
If it happens only to the microsoft edge... Well... either it will be updated and fixed soon..or you always go for something more Reliable if speed is not your concern( Firefox>Chrome).. I dont know if flash player is automaticaly updated in edge like in chrome.. but definately if its not upgrade your flash player on the browser... thats my suggestions.. Hope i helped!