You are not alone, i'am in the exact same situation, with a brand new G-Sync 144Hz screen. Let's be clear, when you pan the view with mouse or numpad key, that's perfectly smooth, but if you enable TrackIR, it feel sluggish, like 30 FPS on a 60Hz screen...only solution: a perfect 120 or 60 FPS, but you notice motion blur when you turn head...I try everything, G-Sync, non G-Sync, standard V-Sync, Adaptative Sync, FPS limiter, nothing works...you need a perfect 120 or 60 FPS for smoothness (but with motion blur), and I run out of idea now....:cry: