What Kind of monitor do you have? Gsync, resolution?
I have a 4k 120hz monitor and I noticed that Gsync doesn’t work in Hitman 2 like it does on alot of my other games. When I’m getting 90 to 100 FPS the game stutters like what you have in the video you posted. However, I have found that turning on Vsync option “1” fixes the issue for me. Option one says it cuts your FPS in half to 30FPS but it only does that on a 60hz panel. If you have a 120hz panel then it will cut it to 60FPS. It’s smooth as silk at 60FPS but not a 90FPS so it’s got to be a problem with the game’s frame times matching up with the display panel.
If you have a 120hz panel then try using the Vsync 1 option in the game. If you have a 60hz panel then use option “2”. Don’t try to force Vsync or FPS limitations through the Nvidia control panel on this title.
Usually with a Gsync monitor you don’t need Vsync at all but for some reason Gsync stutters in this game at least on my monitor it does and in game Vsync is the only way to work around it that I have found.