Starcraft 2 - Preparing Game Data

Uncheck and click OK. This has been reported to instantly boost "Preparing Game Data" download speeds from KBs to MBs. Comparison of Solution Success Rates Estimated Success Language Toggle Persistent 600MB download loops SC2Switcher Bypassing launcher bugs entirely Cache Clear General launch failures or 0 B/s stalls OneDrive Unsync Stalls during the "Preparing" phase

Press Windows Key + R , type %ProgramData% , and delete the and Blizzard Entertainment folders. Repeat this for %AppData% , %LocalAppData% , and %Temp% . 4. Disable "Auto-Detect Settings" in Windows starcraft 2 preparing game data

The most frequent cause is a conflict where the launcher thinks the game should be in one language (e.g., German or Spanish) while the client is set to another (English), causing a continuous re-download of regional assets. Uncheck and click OK