Turn off V-Sync and use RTSS to limit the FPS and activate both Nvidia Reflex: Ultra ingame and Low Latency Mode: Ultra in the Nvidia App for the game also make sure Triple Buffering is off for the game. You have to play the game with G-Sync and without V-Sync or else it keeps activating Framegen for whatever reason and that causes stuttering and frametime drops.
And atm you have to be "Offline" in your Steam Friendslist, or else it causes stuttering ingame because of anti cheat. The game has so many problems it's not funny anymore, I mean you can't even change your loadout if your are downed, then you are softlocked and have to go back to the main menu, it's ridiculous what a buggy mess this game is.