To put it in tiltilltrlls' words; "After making the described changes, my game experience has been infinitely better. Buttery smooth 60 FPS. No micro stutter. Nice FOV. Life's good".
There are a couple of things you will have to do in order to improve overall Fallout 4's performance, like making changes in Fallout 4 Launcher Settings, Fallout4.ini, and Fallout4Prefs.ini changes. So let's get down with it.
The settings described below may or may not be the best possible settings for your rig and are subject to taste. Shadow Distance and Godrays Quality, are absolute FPS killers for most machines, so turn these down to Medium and Low respectively. You will notice a slight difference in image quality as far as shadows go, but it was well worth the ~15 frames.
| Setting | Value |
| Antialiasing | TAA |
| Anisotropic Filtering | 16x |
| Texture Quality | Ultra |
| Shadow Quality | Medium |
| Shadow Distance | Medium |
| Decal Quantity | Ultra |
| Lighting Quality | High |
| Godrays Quality | Low |
| Depth of Field | Bokeh |
| Ambient Occulsion | SSAO |
| Screen Space Reflections | On |
| Wetness | On |
| Rain Occulsion | On |
| Motion Blur | Off |
| Lens Flare | Off |
Fallout4.ini Changes
Search for the following settings in the Fallout4.ini file located in Documents/My Games/Fallout4. If they already exist, change them to the values below. If they do not exist, create them under the appropriate section.
[General]
bMouseAcceleration=0
uInterior Cell Buffer=12
uExterior Cell Buffer=144
bUseThreadedBlood=1
bUseThreadedMorpher=1
bUseThreadedTempEffects=1
bUseThreadedParticleSystem=1
bUseThreadedAI=1
bUseMultiThreadedFaceGen=1
bUseMultiThreadedTrees=1
iNumHWThreads=8*
iPreloadSizeLimit=262144000
iFPSClamp=60***
[Display]
fDefaultWorldFOV=90
fDefault1stPersonFOV=90
iPresentInterval=0
bForceIgnoreSmoothness=1
[Controls]
bMouseAcceleration=0
fMouseHeadingYScale=.03738**
ASTERISK LEGEND (it may require a value adjustment based on your hardware);
* iNumHWThreads is the number of threads your CPU uses.
** fMouseHeadingYScale changes based on the aspect ratio of your monitor;
- 16:9 use .03738
- 16:10 use .0336
- 4:3 use 0.28
- 21:9 use 0.42
*** This setting is volatile. It can be GREAT if your rig is powerful enough to maintain 60 FPS at virtually all times. However, if you get frequent frame dips, leave this one out altogether as it can cause weird issues.
Fallout4Prefs.ini Changes
Search for the following settings in the Fallout4Prefs.ini file located in Documents/My Games/Fallout4. If they already exist, change them to the values below. If they do not exist, create them under the appropriate section.
[Display]
fDefaultWorldFOV=90
fDefault1stPersonFOV=90
iPresentInterval=0
bForceIgnoreSmoothness=1
It is well known that the Bethesda games act weird if you go much over 60 FPS, so use a 3rd party tool or the NVIDIA/AMD Control Panel to enable VSYNC or turn on a frame limiter.
As usual, all the normal legal speak applies. Try at your own risk, etc. Shoutout to all the Redditors and others around the web who posted possible tweaks and fixes, and mostly to the tiltilltells for his original Ultimate Fallout 4 PC Tweak Guide post on Reddit.
Since this post is all about Fallout 4 Tweaks, post your findings in the comments below!
