To do this via the in-game preferences, follow the instructions below:
- Enter your in-game preferences
- Click the 'Interface' tab
- Within the 'General' panel change the 'Rendering Mode' from 'GPU Assisted' to 'Software'
- Click the 'Confirm' button
If you cannot access your preferences screen you can change this when first launching the game on the splash screens by pressing and briefly holding:
ALT + SHIFT + F10 all at the same time.
This should change the game from GPU Rendering to Software Rendering mode.