Have you tried clicking the 'HD' button in the lower right? You can step down the video quality to 380p. Does that help? The default is 'auto', which I'd expec

Have you tried clicking the 'HD' button in the lower right? You can step down the video quality to 380p. Does that help? The default is 'auto', which I'd expect to be fine, but if it picks up settings from Vimeo, you might have something else selected.