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I purchased my Surface Pro 4 in October 2016 and flickergate kicked in in December 2017. Adding seconds to the taskbar clock with a registry entry buys the machine around another month of use because, to begin with, any movement on the screen corrects the blurring and flickering. However, the will to flicker is strong in the Surface Pro 4 and it eventually overrides this workaround in a quest to flicker itself to death. I might just have to step in at some point and smash it pieces myself out of frustration.