Q How to force Optimus or Switchable discrete GPUs?

A Navigate to the respective control panel and select High-performance.

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AMD Switchable graphics and NVIDIA Optimus are both systems to help save battery power by automatically switching between a high performance discrete GPU and a lower power integrated GPU. The following instructions explain how to force a Laptop to use discrete graphics (for example whilst benchmarking).

Open the graphics control panel by either right clicking on the desktop and selecting "Catalyst or Nvidia Control panel". Alternatively search for these entries in the control panel or via the Windows 8/10 Homescreen.

For Nvidia Optimus select the following option:

For AMD Switchable select the following option:

Don't forget to switch back to automatic when you are done, otherwise your battery life will be considerably reduced.