VRR Explained: G-SYNC, FreeSync Premium Pro, and HDMI 2.1 VRR — Tiers, Overdrive, and the Budget LFC Gotcha
Variable refresh rate now spans three overlapping ecosystems — NVIDIA G-SYNC, AMD FreeSync, and HDMI 2.1 VRR — each with certification tiers that set the VRR floor, mandate low-framerate compensation, and bound overdrive overshoot, with the cheapest FreeSync tier leaving LFC optional.