Several Ways to Reduce Input Lag

Input lag in simple words is the delay of signal from your mouse and keyboard being displayed on the monitor. Input lag is the worst enemy of First Person Shooter (FPS) games, you would want the lowest latency possible.

Several ways to reduce latency or input lag are as follows:

Nvidia's Low Latency Mode

The new feature of nvidia is low latency mode. Previously it was max pre-rendered and was replaced by this. Setting it to mode "Ultra" should give you the lowest latency.

For AMD users, the feature is called Anti-Lag. To configure the settings, read this guide.

Nvidia Profile Inspector

Another feature that could fix input lag is Frame Rate Limited Mode in Nvidia Profile Inspector.

There are 2 options you can choose:
- FLIP_BY_FLIPMETERING
- ALLOW_ALL_MAXWELL.
You can read more on this here or watch this youtube video by BananaGaming.

HPET Off/Disabled

High Precision Event Timer (HPET) may help in solving mouse delay problem as said by someone in the comment from this youtube video about HPET On vs Off Benchmark.

Few ways to disable HPET are through BIOS, Device Manager and Command Prompt.

MarkC Windows Mouse Acceleration Fix

This is a registry file that will remove mouse pointer acceleration on windows. Go to this blog to read more and download the fix.

Using Solid-State Drive SSD

I have been playing fps games like CSGO on HDD for more than a year before deciding to install SSD and upon switching to SSD the first thing I noticed was the improved responsiveness of my CSGO. Previously I have always felt there was a slight delay when playing fps games on HDD.