First you need to get it to detect and use the right card.
A. Uninstall, and then reinstall, the latest graphics card driver.
B. Make sure that your AMD graphics card is set as the default graphics card.
Here's the steps on how to set it to default.
1. Open the "Control Center".
2. Select "Manage 3D Settings" under 3D Settings.
3. Click on the "Program Settings" tab and select the program you want to choose a graphics card for from the drop down list.
4. Now select "preferred graphics processor" in the drop down list. (You can see what the automatic option is listed as global setting) If you want to use the dedicated graphics card, select High-performance AMD processor.
Once it is running on the right one, test the system again and see if the problem persists.
For ATI/AMD graphics cards the process varies.
You may need to open graphics then PowerPlay and set plugged in and/or battery to maximize performance.
You can also try going to graphics then 3D and move the slider to performance. Your computer may also have a switchable graphics tab where you can change the settings for individual programs.