Mac Pro

Why is the screen flickering?

Mac Pro (Late 2013) with a 3.5Ghz 12 core processor, 32Gb of RAM, 512Gb SSD, and the AMD FirePro D500 with 3 Gb. I am experiencing regular screen flickering.The display screen flickering most obviously at 4k@60Hz.

I have sorted out some reasons:

1.Settings – Display – Resolution Select display default(creen not flickering)

2.Settings – Display – Resolution Select more space (Default application E.g Safari creen not flickering,But Chrome screen flickering)

3.Use HDMI 4k@30Hz (creen not flickering)

Tried to update the system,Reset the PRAM (or NVRAM).The problem still exists

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