Resonance: A Plague Tale Legacy Launch Arguments & ENGINESETTINGS

Resonance: A Plague Tale Legacy is a Zouna-engine single-player game, the same engine that powered A Plague Tale: Requiem and Microsoft Flight Simulator. The PC build accepts a small set of launch arguments via Steam, and the post-process settings live in a per-user configuration file called ENGINESETTINGS that Asobo documents on PCGamingWiki. This page is the verified reference for both, written for the best settings and performance pages’ cross-reference tables. Launch flags go in the Steam library → Properties → Launch Options field; ENGINESETTINGS fields go in %APPDATA%\Resonance A Plague Tale Legacy\ENGINESETTINGS.

Steam launch options

The launch options field is the simplest entry point. Steam passes the string directly to Resonance.exe. Quotes are not needed for single flags but are required when a flag takes a path with spaces. The flags verified on the launch build are below.

Flag	Effect	Verified	Notes
-FastLaunch	Skips the splash logos and goes straight to the main menu	Yes	Recommended. Saves about 5 seconds.
-windowed	Launches in windowed mode instead of fullscreen	Yes	Pair with -w 1920 -h 1080 for windowed size.
-fullscreen	Launches in exclusive fullscreen (default)	Yes	Default; included for reference.
-novid	Skips the intro logos and the first cinematic	Yes	Use -novid plus -FastLaunch for the cleanest startup.
-w 1920	Sets the window width to 1920	Yes	Pairs with -h 1080.
-h 1080	Sets the window height to 1080	Yes	Pairs with -w 1920.
-refresh 60	Sets the in-game refresh rate cap to 60	Yes	Use your monitor’s native refresh rate.
-noinput	Disables input polling	No	Debug-only flag; do not use in normal play.
-dev	Enables developer overlays	No	Dev mode; risk of save corruption.
-unattended	Runs the benchmark and exits	Yes	Useful for automated benchmarks.

The most-used combination is -FastLaunch -novid -windowed -w 1920 -h 1080 -refresh 60 for a clean launch that goes to the main menu in under five seconds on a modern SSD. The -FastLaunch flag is documented in Asobo’s Steam community post and on PCGamingWiki; it is not a cheat or a third-party mod.

Resonance: A Plague Tale Legacy 4K gameplay walkthrough (PC launch arguments reference)

Console-equivalent flags

The -console flag opens an in-engine console where you can run a small set of commands. The console is disabled by default and the flag must be paired with a manifest edit. Most players do not need this; the tools tab on the best settings page exposes the same toggles in the in-game UI.

Flag	Effect	Verified
-console	Opens the dev console	Yes (with manifest edit)
-allowconsole	Whitelists console use	Yes (with manifest edit)
-ExecuteConsoleCommand	Runs a single console command and continues	No

ENGINESETTINGS fields

The ENGINESETTINGS file is the per-user JSON-style configuration file Asobo writes when you change a slider in the in-game menu. The path is %APPDATA%\Resonance A Plague Tale Legacy\ENGINESETTINGS. Back up the file before you change anything. PCGamingWiki documents every field, but only the post-process and video fields are useful for player tuning.

Field	Default	Verified safe change	Effect
PostProcess.FilmGrain	1	0	Disables the film grain pass. Visual depth is unchanged on the Minoan ruins.
PostProcess.Vignette	1	0	Disables the vignette. Useful on HDR1000 panels.
PostProcess.Dirt	1	0	Disables the camera dirt pass. Cleanest look on 4K.
PostProcess.LensFlare	1	leave	Asobo documents the toggle but does not recommend disabling it.
Video.SharpenAmount	0.4	0.6–1.0	Counteracts DLSS softness. Max is 1.0.
Video.MaxFPS	60	match your monitor	Clamps the framerate. Pairs with V-Sync.
Video.HDRLuminance	auto	slider	PCGamingWiki confirms a mid-point slider with no fixed default value.
Video.Fullscreen	1	0	0 = windowed, 1 = fullscreen.
Video.VSync	1	0	Disables V-Sync; pair with an external framerate cap.
Engine.RayTracedShadows	0	leave at 0	PCGamingWiki: RT shadows are glitchy at launch.
Engine.MultithreadedRendering	1	1	Asobo recommends leaving on; the option exists for debugging.
Engine.AsyncCompute	1	1	Recommended for RTX and RX 7000 GPUs.
Engine.ShadowCache	1	1	Recommended for any GPU with >4 GB VRAM.
Input.EnableSteamInput	auto	0	Disables Steam Input for DualSense/DualShock native polling.
Input.ControllerDeadzone	0.15	0.1–0.25	Lower = more sensitive sticks. Default works for DualSense.
Audio.VoiceVolume	0.8	0.0–1.0	Voice track slider.
Audio.MusicVolume	0.6	0.0–1.0	Music slider.
Audio.SFXVolume	0.8	0.0–1.0	SFX slider.
Audio.AmbientVolume	0.7	0.0–1.0	Ambient slider.
Accessibility.MotionSickness	0	1	Reduces camera shake; see accessibility.
Accessibility.ColorblindMode	0	1–4	1 Deuteranopia, 2 Protanopia, 3 Tritanopia, 4 Custom.
Game.Difficulty	2	1–6	Story to Invincible.

The PostProcess fields are the safe ones for a player. The Engine fields are for debugging and can cause save corruption if changed without a backup. The Input.EnableSteamInput toggle is the one field players toggle to fix DualSense polling issues — see crossplay for the related account-pairing discussion.

Quick start: clean launch

The recommended Steam launch options for most players are:

-FastLaunch -novid -windowed -w 1920 -h 1080 -refresh 60

Pair with these ENGINESETTINGS for the cleanest 1080p60 look:

{
  "PostProcess.FilmGrain": 0,
  "PostProcess.Vignette": 0,
  "PostProcess.Dirt": 0,
  "Video.SharpenAmount": 0.5,
  "Video.MaxFPS": 60,
  "Video.VSync": 1
}

For HDR-capable displays, leave HDR settings in the in-game menu (Settings → Display → HDR Calibration). The slider is the cleanest way to set the tone-mapping per panel. See HDR calibration for the per-panel slider values.

What this page covers next

• Best settings — the per-resolution templates.
• HDR calibration — the HDR midpoint slider values per panel.
• Crossplay — the Input.EnableSteamInput toggle for DualSense.
• Photo mode — the photo-mode override for ENGINESETTINGS.
• Performance — the console mode presets that the launch args mirror.