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er-patcher/README.md

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Elden Ring Proton Patcher

A tool aimed at enhancing the experience when playing the game on Linux via Proton or natively on Windows. It safely patches eldenring.exe, that is created in a temporary subdirectory and deleted on shutdown, via hex-edits, ensuring the patched executable is run without EAC if no --with-eac flag is set. Use it at your own risk.

Dependencies

  • Python ≥ 3.8

Usage

  1. Copy the file er-patcher to the game directory.
  2. Set the game's launch options to python er-patcher ARGS -- %command% in Steam. See Features for available options.
  • Example: python er-patcher --all -r 30 --disable-rune-loss -- %command%
  • Example with MangoHud and Wine fullscreen FSR: python er-patcher -r 144 -uvca -- env WINE_FULLSCREEN_FSR=1 MANGOHUD=1 MANGOHUD_CONFIG=histogram %command%
  • Example with the Seamless Co-op mod: python er-patcher --all -x launch_elden_ring_seamlesscoop.exe -- %command%
  1. Run the game on Steam. er-patcher automatically runs a patched eldenring.exe without EAC.

Note: Some distros (like old Ubuntu versions) run Python 2 instead of 3 when running python. You must use python3 in that case.

Features

Argument Description
-r RATE or --rate RATE Set a custom frame rate limit (default: 60).
-x EXE or --executable EXE The executable to run, relative to the game's 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 rune loss upon death.
--all Enable all options but --rate and gameplay changes like --disable-rune-loss.
-u or --ultrawide Remove black bars on non-16:9 aspect ratios.
-v or --disable-vignette Remove the vignette.
-c or --disable-ca Remove chromatic aberration.
-a or --increase-animation-distance Fix low frame rate animations for distant entities or at screen edges.
-s or --skip-intro Skip intro logos on startup.
-f or --remove-60hz-fullscreen Remove 60 Hz lock in fullscreen (unneeded on Proton).

Windows support

The tool works just as well on Windows. This launch option line works if you installed Python from Microsoft Store:

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

Note: It opens a Python console that closes by itself on shutdown. Use pythonw if you find it annoying. python needs to be in PATH for Windows to find it.

References