Navigate to /cstrike/maps . Custom maps downloaded from servers can easily bloat the folder to 10GB+. Delete .bsp files you no longer play.
: Though the download is small, the installer will decompress files back to their original size during setup. cs source compressed download
Ensure you have a tool like 7-Zip to extract .rar, .zip, or other compressed files. Navigate to /cstrike/maps
Most compressed "No-Steam" versions cannot play on official Valve servers (VAC-secured). Counter-Strike: Source Depots - SteamDB : Though the download is small, the installer
Note: Highly compressed files can take a long time to unpack as they "re-inflate" to their original 4.8 GB size.
Even if the download is small, the game still requires the following to run smoothly: Processor: 1.2 GHz (2.4 GHz recommended). RAM: 256MB (512MB recommended). Graphics: DirectX 7 level (DirectX 9 recommended).