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Unreal Engine Tweaks

TheRazerMD edited this page Jan 24, 2026 · 16 revisions

Tip

Regarding Engine.ini

  • To locate the game's Engine.ini, the easiest way is to go to PCGW and look at the Configuration file(s) location section.
    • Example - for Clair Obscur Expedition 33, it's located in %LOCALAPPDATA%\Sandfall\Saved\Config\Windows, create if missing
    • Example - for Witchfire, %LOCALAPPDATA%\Witchfire\Saved\Config\WindowsNoEditor
  • If the Engine.ini doesn't exist, you'll have to create it, and possibly make it Read-Only if the game deletes it on boot or doesn't work in general.

Enable OutputScaling and XeFG

Edit Engine.ini and add

[SystemSettings]
r.NGX.DLSS.DilateMotionVectors=0
r.Streamline.DilateMotionVectors=0

When using FSR2 inputs and the game is crashing

Edit Engine.ini and add

[SystemSettings]
r.FidelityFX.FSR2.UseNativeDX12=1

When using FSR3 inputs and the game is crashing

Edit Engine.ini and add

[SystemSettings]
r.FidelityFX.FSR3.UseNativeDX12=1

When using FSR3.1 inputs and the game is crashing

Edit Engine.ini and add

[SystemSettings]
r.FidelityFX.FSR3.UseNativeDX12=1
r.FidelityFX.FSR3.UseRHI=0

Force FSR-FG Swapchain instead of RHI one

Edit Engine.ini and add

[SystemSettings]
r.FidelityFX.FI.OverrideSwapChainDX12=1

Enable DLSS & Streamline & DLSS-G

Edit Engine.ini and add

[SystemSettings]
r.ngx.dlss.enable=1 ; Enable DLSS
r.Streamline.InitializePlugin=1 ; Init Streamline
r.Streamline.DLSSG.Enable=1 ; Enable DLSS-G
t.Streamline.Reflex.Enable=1 ; Enable Reflex

Enable upscaler plugin

Edit Engine.ini and add

[SystemSettings]
r.AntiAliasingMethod=4 ; TSR
r.TemporalAA.Upscaler=1 ; Enable upscaler plugin

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