Hello, I have what I think to be a unique problem with my game, I haven't found anyone with a similar problem. The game runs at a smooth 60FPS, that is until I sneak with a weapon drawn the frames drop to 45FPS and stutters/lags for the rest of the session until I exit the game completely and reload. No matter what I do in the game it will always start to stutter, just sneaking seems to make it happen instantaneously. Even when the game is paused the mouse lags and stutters making it hard to select things in the pause screen. All this even happens with a fresh install of the game, with no mods whatsoever.
I've already tried NVAC, NVSR, ENBoost, 4GB Patcher, playing the game in windowed mode, disabling Vsync, setting all my LOD settings to the bare minimum, uninstalling all my mods, and playing the game vanilla with a complete fresh install. None of these worked.
I've found a temporary solution on accident though, when I went to press Esc to pause my game I accidentally pressed a Home button on my keyboard which brought up a new window of Google Chrome. After exiting that and un-pausing my game I discovered that the frames went back up to 60FPS and the stutters were gone. That is until I sneak once more, or play the game long enough where it starts to happen again.
Considering the fact the mouse stutters in the pause screen, and the weird temporary home button solution I'm starting to wonder if this is a problem with my mouse. Though I'm doubtful the mouse alone can impact the performance of my game so greatly.
Specs: I have an ASUS gaming laptop.
GPU: Nvidia 1050Ti
OS: Windows 10