Musescore Website Issues

Hiya, I have been having these playback issues for a while. When I press the play button, the audio plays, but the sheet music doesn't follow, it keeps loading, so I can't keep up with the music (I like looking at the sheet music as it plays). It works properly when I refresh the page, but it is extremely irritating to do this every single time.

Can anyone help?
Thanks,
Jvde