Audio and Video not synchronuous
When watching a video baught from Amazon in most cases audio and picture are not synchronous. Discrepanca seems to increase with watching time. The problem does not occur with Opera, Internet Explorer or Edge. Deleting browser cache and cookies does not help. Reducing the quality or rewind does not help. Internet quality/speed seems to be OK because it wors fine with other browsers. How can I fix this problem. I do not want to go to another browser because I am very happy with firefox.
Best regards Martin