|Probably your laptop has been automatically set to use Intel integrated graphics processor (IGP) causing low performance in the game. To activate a dedicated graphics card, please follow the instructions below:
ATI Catalyst Control Center
Setting the video card switch parameter in ATI Catalyst Control Center:
1. In the "Start" menu type CCC in the search field, then choose CCC – Advanced from the search results list.
2. In the Catalyst Control Center menu click Switchable Graphics.
3. Click Browse and search the executable file for the application to be tuned. In this case the executable files are Castle.exe and PW_Game.exe
4. Click Apply to save the new parameters.
All changes will be immediately applied.
nVidia control panel
The adjustment is performed in the nVidia control panel on the Manage 3D Settings tab . Please see below:
In this case you should add Castle.exe and PW_Game.exe.