christopherdolan / er-patcher

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

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!

Features

• set custom frame rate limits (e.g. 30, 90, 165, ...)
• remove black borders when using resolutions with an aspect ratio other than 16:9 (e.g. ultrawide).
• remove vigniette overlay
• remove chromatic abberation filter
• increase animation distance / fix choppy animations at screen edges
• remove 60hz limit when using fullscreen mode

Usage

1. Copy the file er-patcher to the game directory.
2. In steam, set the game launch options to ./er-patcher ARGS -- %command% where ARGS is replaced with a combination of

• -r RATE or --rate RATE for setting a custom framerate cap (default: 60)
• -u or --ultrawide for removing black bars
• -v or --disable-vigniette for removing the vigniette overlay
• -c or --disable-ca for disabling chromatic abberation
• -a or --increase-animation-distance for fixing low frame rate animations at screen edges or for distant entities.
• -f or --remove-60hz-fullscreen for removing the 60Hz limit in fullscreen mode (only applies to windows and has no effect when running the game through proton due to fshack)
• Example: ./er-patcher --rate 30 -uavc -- %command%
• Example with 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.

Windows

It also work just as well on windows. The only difference is, that you need to run the script via your Python 3 installation. The following launch option line works in case you installed Python from Microsoft Store:

python er-patcher --rate 165 -uvcaf -- %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