How to fix screen tearing in Expeditions: Rome 4K battles?

Commanding legions in 4K, I saw weird stretching and tearing at the edges, making tactical deployment a nightmare. I tried enabling V-Sync in the NVIDIA Control Panel; while tearing stopped, the input lag became unbearable and controls felt sluggish. I used the GamePP Image Sampling Calibrator to raise DLSS sharpening to 70 and adjusted the rendering ratio. RTSS shows frame time converged to 11-15ms, and HWInfo confirms stability after a +0.02V voltage offset.