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Why does my monitor screen show vertical lines or flickering when I enable the FreeSync Premium function? Does my monitor have flaws or malfunctions?

It may happen when the user enables the FreeSync Premium function with some NVIDIA graphic cards (G-Sync enabled in the Nvidia control panel). It indicates the synchronizing between the monitor and graphic card.

For such condition, we suggest to update to the latest driver version of the graphic card; if the issue persists, please contact ZOWIE twitter and FB (#ZOWIEbyBenQ) for further assistance. 

Applicable Models

XL2540K (24.5"), XL2546K (24.5")

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