My old cable was causing a lot of flickering, probably not DisplayPort1.4. Popped it into my Samsung 32" CHG70 at 2560 x 1440 10bit (8bit + FRC)) HDR enabled, running at 144hz with Freesync2 enabled and no flickering. VESA certified and working fine so I'm happy. Worth it being smaller than some other VESA DP 1.4 cables I've seen.
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