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The common "cap 3 frames below the refresh rate" is wrong, as it will frequently trigger V-Sync at higher refresh rates (negating the input lag reduction of being within VRR range). Instead, the formula `refresh - (refresh * refresh / 3600.0)` should be followed instead, as done by NVIDIA Reflex for its own framerate cap when V-Sync is enabled and a VRR display is used.