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Had 144hz screens in the past- helped with online FPS marginally, but always gone to better quality screens, maybe it's getting older but at 100hz 3440x1440 even the ti struggles to max out, I've dabbled with 4k and while it looks beatifull, with aa off it only about hits 60 FPS with quality maxed, every generation of card is faster but games add more lighting and other effects. I can't see 144hz 4k for at least 6 years an no one will have the same setup by that time!