Sometimes precaching fails because the game tries to load a resolution your portable screen doesn't support.
Or use a command-line argument in your launcher shortcut: cs 16 precaching resources problem portable
The hard drive didn’t stutter. The progress bar didn’t freeze. It filled. Smooth. Unreal. Sometimes precaching fails because the game tries to
Adding master server Sending heartbeat Precaching resources... cs 16 precaching resources problem portable