Why can I stream or download from other sites without issues but have problems in Blizzard games?
Streaming services have the ability to buffer information. This means that they give your computer data before you see it, often 30 seconds or even minutes before you need to look at it. Online games on a 'live server’ need to send and receive data immediately so that you can react to it immediately.
A direct download can be interrupted by a connection issue, then pick back up when your connection returns to normal. Our games will try to do this, but if you disconnect for too long, you will be fully dropped from the servers.
Keep in mind that anything that takes up bandwidth can cause game connection issues or make them worse. We suggest playing with as few other applications running as possible for the best experience.