Fallout 4 is no exception.
How to alleviate the stress of your machine while playing this game?
If you are suffering from Fallout 4 high CPU usage, take it easy.

Inputdxdiagand hitEnterto openDirectX Diagnostic Tool.
If your PC doesnt meet the minimum system requirements, c’mon upgrade your hardware in time.
Right-select thetaskbarand selectTask Manager.

In theProcessestab, find the resource-intensive process and right-tap on them one after another to selectEnd task.
To reduce the load of your CPU, take these actions:
Step 1.
Typeedit power planin the search bar and hitEnter.

Tap onChange advanced power tweaks.
ExpandProcessor power management>Minimum processor state> change the value ofSettings (%)to around20%.
ClickApply&OKto make the changes effective.

If you suspect that your graphics driver is outdated or faulty, consider updating or reinstalling it.
Heres how to reinstall graphics driver on Windows 10:
Step 1.
Right-hit theStart menuand selectDevice Manager.

Expand theDisplay adapterscategory to show all your graphics cards.
Right-press the one you are currently using and selectUninstall machine.
Confirm this operation and then start your machine.

After restarting, it will automatically load the latest graphics driver for you.
Consequently, you could modify the graphical configs to see if it will make a difference.
To do so:
Step 1.
Launch Fallout 4 and go toSettingsorOptions.
Heres how to do it:
Step 2.
Typesysdm.cpland hitEnterto openSystem Properties.
In theAdvancedtab, hitSettingsunderPerformance.
Go to theAdvancedtab and click onChangeunderVirtual memory.
Appreciate your support and time!