In The First Descendant, the fire rate of weapons is linked to the frame rate (FPS). Higher FPS can lead to a faster fire rate, which increases damage output. This was tested with different weapons, including the Nightmare Hound and Thunder Cage.

Enter the TFD Game Menu and click Options

Modify the property settings in Graphics and Performance. The specific steps are as follows:

Vsync(Vertical Sync): Turn this off to prevent your monitor's refresh rate from capping your in-game FPS, which can potentially lower your damage output.

NVIDIA Reflex Low Latency: Enable Boost, Enable this setting to reduce latency and increase FPS, potentially boosting your damage.

Maximum Frame Rate: Setting your frame rate to unlimited can help maintain the highest possible FPS, which is beneficial for maximizing fire rate and damage. Up 25% fire rate is from 40 to 144. If you are at 60 it's only about up 8-10% to 144. Low latency mode will only help those in the lower end of the fps spectrum. those above 100 will see little to no difference.

Why Turn Off VSync in Shooting Games?

In games where frame rate impacts fire rate, turning off VSync can be beneficial. Disabling VSync allows your GPU to render as many frames as possible, potentially increasing FPS beyond the monitor's refresh rate. Depending on the game, this can lead to a higher effective fire rate or other benefits.

For players who prioritize responsiveness and performance over visual fidelity, turning off VSync is often recommended. For the best balance, some players use adaptive sync technologies like G-Sync (NVIDIA) or FreeSync (AMD), which reduce tearing and stuttering without the drawbacks of traditional VSync.

Benefits of NVIDIA Reflex Low Latency

1. Reduced Input Lag: Lower input lag means that your commands are executed more quickly, which is crucial in competitive gaming scenarios. 
2. More Responsive Gameplay: Enhanced responsiveness can improve your overall gaming experience, making controls feel more precise and immediate.

Tips: 
1. Reflex is supported on NVIDIA GTX 900 series GPUs and newer. 
2. The benefits of NVIDIA Reflex are more noticeable with high-refresh-rate monitors (120Hz or higher), where reducing milliseconds of lag can be more perceptible. 
3. Using the "Enable Boost" setting can slightly increase power consumption and heat output, which might be a consideration for laptops or systems with limited cooling.
4. The Low Latency mode+boost enables a High-performance mode in the driver and forces the GPU clock to stay in the "boost clock". If you are CPU bound this can REDUCE FPS and lower latency.

About Console settings 
For PS/XBOX users, 120FPS is not recommended, which may cause screen flickering and more screen crashes. It is recommended to use the performance mode, 60FPS.