Yukai wrote: ↑02 Sep 2023, 22:13
So I've been wondering where the hell Fortnite moved Nvidia Reflex setting since I couldn't find it in game.
I tried messing up with LLM in NVCP and apparently it being "On" limits my fps to 171 (which is standart 180hz Reflex limit)
Did Nvidia merged LLM and Reflex in NVCP 3D settings? Or am I missing smth?
They are two separate things which causes more latency if both applied.
When a GPU is above 95% usage it goes into a GPU bound state where the frames drawn by the cpu become to much for the GPU to handle, this is when frames get stored into a buffer which adds latency.
Nvidia Ultra Low Latency or NULL aims to reduce that latency when in a GPU bound state, but adds latency when below 95% because NULL has to read the frame buffer which has a latency penalty.
In order to stay below 95% you can use a frame cap to restrict the GPU usage which under game load, Nvidia reflex does a similar thing only the frame cap is dynamic.
Reflex +boost tries to prevent GPU frequency drops in order to maintain low latency but can cause erratic FPS.
So if your using Reflex disable NULL.
A frame cap can replace Reflex but it can take time to find the right FPS target.
Check the fortnite settings/config file and edit it with notepad, you should be able to modify that to enables a setting. (idk where the file is located tho)
NULL will have higher latency than Reflex or a frame cap.