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Tearing while scrolling with multiple monitors

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I am experiencing tearing on one of my monitors only when I have another instance of Firefox open on the other monitor. I have turned off hardware acceleration and that lead to the current state, before it always had tearing. Both monitors are 60hz. I am specifically using the XFCE Spin of Fedora 27.

I am experiencing tearing on one of my monitors only when I have another instance of Firefox open on the other monitor. I have turned off hardware acceleration and that lead to the current state, before it always had tearing. Both monitors are 60hz. I am specifically using the XFCE Spin of Fedora 27.

Modified by mail929

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Vsync, not enough video memory, slow graphics accelerator, CPU throttling or low memory?

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Also enable hardware acceleration because that helps with utilizing your graphics card to improve speed with the browser.