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Elden Ring enhancement patches (ultrawide support, custom frame rate limits and more) seamlessly integrated with steam.

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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 (unless explicity told to do so). 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 python er-patcher ARGS -- %command% See Features for available options.
  • Example: python er-patcher --all --rate 30 --disable-rune-loss -- %command%
  • Example using the seamless co-op mod: python er-patcher --all --executable launch_elden_ring_seamlesscoop.exe -- %command%
  • Example using MangoHud and wine fullscreen FSR: python er-patcher --rate 144 -uvca -- env WINE_FULLSCREEN_FSR=1 MANGOHUD=1 MANGOHUD_CONFIG=histogram %command%
  1. Launch the game through steam. er-patcher automatically launches a patched version of eldenring.exe with EAC disabled.

Note: There might be some distros (e.g. older Ubuntu releases) that launch python 2 instead of 3 when running python. In that case you'll need to replace python with python3 in the launch option line.

Features

Argument Description
-r RATE or --rate RATE Set a custom framerate limit (default: 60).
-x EXE or --executable EXE The executable to launch, relative to the games folder.
Mutually exclusive with --with-eac.
--with-eac Run game with EAC (Use it at your own risk).
Mutually exclusive with --executable.
--disable-rune-loss Disable losing runes upon death.
--all Enable all options except --rate, --executable, and
gameplay changes like --disable-rune-loss.
-u or --ultrawide Remove black bars.
-v or --disable-vignette Remove the vignette 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 following launch option line works in case you e.g. 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. As long the flag --with-eac is not set, the tool modifies the steam launch command to launch the patched executable instead of start_protected_game.exe, thefore ensuring that the patched exe is never run with EAC enabled. After the game is closed, the patched executable is removed.

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