I am also facing this issue. Don t know the proper reason why this is occurring. In my case, the video is freezing after a few minutes. I am getting this issue after the latest Windows 10 update was released. To know visit iCloud Support and ask about the issue.
SVPlayer for 🍎 iPhone | iPad | Apple TV and 🤖 Android
SVP 4 for Windows and macOS: 30 days FREE TRIAL.
Read FAQ & follow SVP @ Facebook, Twitter