﻿Cyberpunk 2077 - graphics optimization mod by Eclipse, ported to version 2.5
Game version: 2.5 (Steam)

WHAT THIS IS
A direct port of Eclipse's mod "Cyberpunk_2077_v2.31_Graphics_Opt_Mod_28.09.2025" from game version 2.31 to 2.5.
- All exe edits were moved to the 2.5 exe without changes.
- rendering.ini, optimization.archive and no_intro.archive are taken from the mod without changes.
- Only one file was removed: weather.archive. In version 2.5 it causes a video memory leak: while driving around
  the city, memory keeps growing, FPS drops sharply, and then the game freezes. Without it, memory stays stable
  and FPS does not drop over time.

WHAT IS LOST
weather.archive turned off global illumination (GI). Without it, GI stays on, so the FPS gain from turning it off is lost:
about 3.5-4 frames per second (about 8.5 %).
Measured with the built-in benchmark on Steam Deck, same graphics settings:
this port - 42.8 fps, with GI off - 46.5 fps.

VERSIONS (pick one)
v1 - decals (dirt, stains and graffiti on walls) are slightly simplified.
v2 - decals are turned off completely. Slightly higher FPS.

INSTALLATION
1. Back up the files that will be replaced or deleted:
   bin\x64\Cyberpunk2077.exe
   engine\config\platform\pc\rendering.ini
   archive\pc\content\basegame_3_nightcity_gi.archive
   archive\pc\ep1\ep1_1_nightcity_gi.archive
2. Open the folder of the version you picked: v1\Cyberpunk 2077 or v2\Cyberpunk 2077.
   Copy everything inside it (the archive, bin and engine folders) into the game folder and replace the files.
   Where the game folder is: Steam >> Library >> Cyberpunk 2077 >> gear icon >> Manage >> Browse local files.
   On Steam Deck it is usually: /home/deck/.local/share/Steam/steamapps/common/Cyberpunk 2077
3. Delete two files from the game folder (as in the original mod):
   archive\pc\content\basegame_3_nightcity_gi.archive
   archive\pc\ep1\ep1_1_nightcity_gi.archive
4. If you had the mod for 2.31 or another version with weather.archive, delete archive\pc\mod\weather.archive.
5. In the game: Settings >> Utilities >> AMD Simultaneous Multithreading (SMT) >> Off.

IMPORTANT
- This mod is for game version 2.5 only. After a game update, do not copy this exe into the new version.
- "Verify integrity of game files" in Steam brings back the original files, and the mod stops working.
  After verifying, repeat steps 2-3.

HOW TO REMOVE THE MOD
1. Restore the files from your backup
   (or Steam >> game Properties >> Installed Files >> Verify integrity of game files).
2. Delete optimization.archive and no_intro.archive from the folder archive\pc\mod.

TESTED ON
The author tested the original mod with GE-Proton10-15, TDP 18 W, GPU 1800 MHz, CPU and GPU undervolt, and SDWEAK.
The 2.5 port was tested on the licensed Steam version of the game. Not tested on the GOG version.
Device and settings used for testing the port:
- Steam Deck LCD (Van Gogh APU), modified BIOS
- RAM overclocked to 6400 MT/s (stock 5500)
- GPU overclocked to 1800 MHz (stock 1600)
- TDP 18 W (stock 15)
- Undervolt: CPU -50 mV, GPU -30 mV
- Screen 70 Hz
- SteamOS 3.9.5, GE-Proton11-7
- In the game: 1280x800 without upscaling, TAA anti-aliasing, "Custom" preset

Choose graphics settings to your taste. The higher the settings, the smaller the FPS gain from the mod.

AUTHOR
The original mod is made by Eclipse. Community: https://t.me/kf4fr/36398
The 2.5 port is unofficial: the original author did not make it and is not responsible for it.
