Things to try if you're having weird problems with the game that no-one else is experiencing.
In no particular order:
- Restart the computer
- Verify integrity of game files through Steam
- Delete files and folders under %USERPROFILE%\Documents\My Games\UnrealEngine3
- Delete files and folders under %USERPROFILE%\AppData\Roaming\Shooter\SaveData
- Don't edit any ini files or use any custom configs
- Temporarily disable your antivirus (for testing purposes), or at least whitelist the DB install directory
- Update/rollback graphics card drivers
If you know any other tips please let me know.