er-patcher/README.md

Elden Ring Proton Patcher

A tool aimed at enhancing the experience when playing the game on linux through proton or natively on windows.

Warning

This tool is based on patching the game executable through hex-edits. However it is done in a safe and non-destructive way, that ensures the patched executable is never run with EAC enabled. Use at your own risk!

Dependencies

• Python >= 3.8

Usage

1. Copy the file er-patcher to the game directory.
2. In steam, set the game launch options to ./er-patcher ARGS -- %command% See Features for available options.

• Example: ./er-patcher --all --rate 30 --fix-camera -- %command%
• Example using MangoHud and wine fullscreen FSR: ./er-patcher --rate 144 -uvca -- env WINE_FULLSCREEN_FSR=1 MANGOHUD=1 MANGOHUD_CONFIG=histogram %command%

3. Launch the game through steam. er-patcher automatically launches a patched version of eldenring.exe with EAC disabled.

Features

Argument	Description
-r RATE or --rate RATE	Set a custom framerate limit (default: 60).
--fix-camera	Disable camera auto-rotation.
--all	Enable all options except --rate and gameplay changes like --fix-camera.
-u or --ultrawide	Remove black bars.
-v or --disable-vigniette	Remove the vigniette overlay .
-c or --disable-ca	Disable chromatic abberation.
-a or --increase-animation-distance	Fix low frame rate animations at screen edges or for distant entities.
-s or --skip-intro	Skip intro logos at game start.
-f or --remove-60hz-fullscreen	Remove the 60Hz limit in fullscreen mode (not needed with proton).

Windows Support

The patcher works just as well on windows. The only difference is that you need to explicitly call python to run the script er-patcher. The following launch option line works in case you installed Python from Microsoft Store:

python er-patcher --rate 165 --all -- %command%

Note: This spawns a python console which will close by itself after the game has finished running. If you find this annoying you can try using pythonw instead. In any case python needs to be in PATH for windows to find it.

How it works

When the game is launched through steam, the tool creates a patched version of eldenring.exe in a temporary subdirectory while leaving the original intact. The tool then modifies the steam launch command to launch the patched executable instead of start_protected_game.exe. This ensures that the patched exe is never run with EAC enabled. After the game is closed, the patched executable is removed.

Credits

• EldenRingFpsUnlockAndMore
  • frame time limit adjustment
  • black bar removal
• Flawless Widescreen
  • vigniette and ca removal
  • animation distance increase
• DarkSouls3RemoveIntroScreens: intro logo skip
• EldenRingMods + EldenRingFpsUnlockAndMore: camera fix