Like all the other moderns browsers including Firefox and Chrome, Opera has also added support for utilizing GPU for video and animation playback on a webpage. This is called hardware acceleration and is enabled by default. But if you have a low end graphics card then it can make videos play very slow and you may have to disable hardware acceleration. After you have disabled the hardware acceleration, Opera would use software rendering for all web page contents. Here is how you can disable hardware acceleration in Opera web browser :
- Run Opera web browser from its desktop shortcut.
- Click on the red colored Opera button on the top-left corner and select Opera → Settings or you can just use the hotkey Alt + P.
- In the Settings window, scroll down and un-check the checkbox labeled Use hardware acceleration when available.
- You do not have to press any OK buttons to save the settings. The settings are saved automatically. But the settings take effect only upon restarting of the Opera browser.