: Changing the game's text or audio language (e.g., from Russian to English for custom campaigns) frequently causes the client to re-download the same ~600MB of "game data" at speeds far below the user's actual bandwidth.
On older systems or mechanical hard drives (HDDs), this indexing process can take anywhere from 30 seconds to 15 minutes. If the process fails, it loops infinitely. starcraft 2 preparing game data
Here is how StarCraft 2 game data is prepared for analysis and AI training. : Changing the game's text or audio language (e
Then, relaunch the Battle.net app.
: In some cases, the process isn't actually stuck but is performing a slow file verification. Community members suggest leaving it for at least 30 minutes to an hour if it's the first time you've seen it after a patch. Here is how StarCraft 2 game data is
You can sometimes skip this check by launching the game directly. Navigate to your StarCraft II installation folder.
Rename your StarCraft II folder (e.g., to StarCraft II_Old ).