DSOGaming writes: “At 2560×1440, we were able to get a constant 60fps experience. At 4K, our NVIDIA GeForce RTX2080Ti was able to run the game with a minimum of 44fps and an average of 48fps.”
Source: N4G PC Call of Duty: Modern Warfare runs with 44-50fps with Ray Tracing in 4K/Ultra on the NVIDIA RTX2080Ti