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Grren/Purple vertical lines on videos | Firefox Support Forum

While hardware acceleration is usually a good thing, it can sometimes cause glitches if your drivers are outdated or your hardware is incompatible. 1. Screen Flickering or Black Screens mediawmfdxvad3d11enabled

Only disable it if you are experiencing specific visual artifacts, crashes, or are performing heavy GPU-bound tasks (like 3D rendering) simultaneously in the background. Grren/Purple vertical lines on videos | Firefox Support

Video fails to render properly in full-screen mode. Performance Trade-offs mediawmfdxvad3d11enabled