If you are receiving Fallout 76 stuttering, lag, and low FPS issues, you are not alone.
Other players also have the same troubles.
Low FPS Fallout 76
Fallout 76 is pretty popular among players all over the world.

In this post, we will find some potential fixes to help you out.
How to Fix Fallout 76 Low FPS?
Therefore, there is not enough RAM for your system resources.

Right-hit yourtaskbarand selectTask Managerin the context menu.
InProcesses, do a right-tap on the CPU and RAM heavy program and chooseEnd task.
Launch Fallout 76 again to see if Fallout 76 low FPS still persists.

Launch the game and go toSETTINGS.
InDISPLAY, set theWindow modetoFullscreen.
LowerTexture Quality,Water Quality,Lighting Quality, andShadow Quality.
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In this condition, you had better revamp your graphics driver to the latest version.
PressWin + Xtogether to selectDevice Managerin the drop-down menu.
ExpandDisplay adaptersto show the graphics card you are using.
This is a graphics technology that synchronizes the frame rate of a game with a gaming monitors refresh rate.
To disable it, you need:
Step 1.
PressWin + Eto openFile Explorerand then locate the following path:
Documents\My Games\Fallout 76
Step 2.
PressCtrl + F> typeiPresentInterval> hitEnter.
Save the changes and shut the file.
PressWin + Rto open theRunbox > typepowercfg.cpl> hitEnter.
TickHigh performanceand then relaunch the game to see if there is any improvement.
Right-click any empty space on your desktop and selectNVIDIA Control Panel.
Go to3D controls>Manage 3D controls.
InProgram parameters, chooseFallout 76.exefrom the drop down menu.
Relaunch Fallout 76 to see if Fallout 76 low FPS is gone.
Have you ever encountered the error of Fallout 76 disconnected from Server?
This post shows how to solve the problem.