LEGO Batman: Legacy of the Dark Knight is built on Unreal Engine 5 with full Lumen global illumination, Nanite geometry, and hardware ray tracing — making it the most technically demanding LEGO game ever released. This guide covers system requirements, the best settings for each hardware tier, and how to fix common performance issues.

Note: The game uses Denuvo Anti-Tamper DRM, which may impact performance on some systems. The game also requires upscaling (DLSS/FSR/XeSS) with Frame Generation for the minimum 30 FPS target at 1080p.

Official System Requirements

	Minimum	Recommended	Ultra (4K)
Target	Low 1080p @ 30 FPS	Medium 1440p @ 60 FPS	High 4K @ 60 FPS
OS	Windows 11	Windows 11	Windows 11
CPU	Intel i5-10600K / Ryzen 5 1600	Intel i7-12700 / Ryzen 7 5800X	Intel i9-13900K / Ryzen 9 7950X
RAM	16 GB	16 GB	32 GB
GPU	GTX 960 4GB / RX 6400 4GB / Arc A580 8GB	RTX 2070 SUPER 8GB / RX 6650 XT 8GB / Arc B580 12GB	RTX 4070 12GB / RX 7800 XT 16GB
Storage	50 GB SSD	50 GB SSD	50 GB NVMe
Upscaling	DLSS/FSR/XeSS Balanced + FG	DLSS/FSR/XeSS Quality + FG	DLSS/FSR/XeSS Quality

Best Settings by GPU Tier

Budget Build (GTX 1060 / RX 580 / Arc A580)

Aim: 30-40 FPS at 1080p

Resolution: 1920x1080
Upscaling: FSR/XeSS Balanced (Performance if needed)
Frame Generation: ON (required for smooth 30 FPS)
Global Illumination: Low (SSGI instead of Lumen)
Shadow Quality: Low
Post Processing: Low
Texture Quality: Medium (2GB VRAM budget)
Effects: Low
Volumetrics: Off
Ray Tracing: Off

Mainstream (RTX 2060 / RTX 3060 / RX 6600)

Aim: 60 FPS at 1080p

Resolution: 1920x1080
Upscaling: DLSS/FSR Quality
Frame Generation: ON
Global Illumination: Medium (Lumen)
Shadow Quality: Medium
Post Processing: Medium
Texture Quality: High
Effects: Medium
Volumetrics: Low
Ray Tracing: Off

High-End (RTX 3070 / RTX 4070 / RX 7800 XT)

Aim: 60 FPS at 1440p or 4K

Resolution: 2560x1440 or 3840x2160
Upscaling: DLSS/FSR Quality (4K), Off or Quality (1440p)
Frame Generation: ON for 4K, optional for 1440p
Global Illumination: High (Lumen)
Shadow Quality: High
Post Processing: High
Texture Quality: Ultra
Effects: High
Volumetrics: Medium
Ray Tracing: Low to Medium

Unreal Engine 5 Tweaks for Extra Performance

For advanced users, these engine-level tweaks can improve performance:


// Add to Engine.ini (Documents/LEGO Batman/Legacy of the Dark Knight/Saved/Config/WindowsNoEditor/Engine.ini)


[SystemSettings]

r.Streaming.PoolSize=1024        // Lower texture pool (for 4GB VRAM cards)

r.Shadow.MaxResolution=512       // Lower shadow map resolution

r.Shadow.CSM.MaxCascades=4       // Reduce shadow cascades

r.Lumen.Reflections.BilateralFilter=0

r.Lumen.DiffuseIndirect.Allow=0  // Disable Lumen GI (big FPS gain)

r.ScreenPercentage=80            // Internal resolution scaling

foliage.LODDistanceScale=0.5     // Lower foliage quality

Caution: Backup your Engine.ini before editing. Some settings may affect visual quality significantly.

Common Performance Issues & Fixes

Stuttering in Open World

Likely cause: Texture streaming or shader compilation stutter. Fix: Install on NVMe SSD. Increase texture pool size in Engine.ini. Ensure latest GPU drivers are installed.

Low FPS on High-End GPU

Likely cause: Frame Generation disabled or ray tracing too high. Fix: Enable DLSS/FSR Frame Generation. Lower RT settings to Medium. Check that Windows 11 GPU scheduling is ON.

Game Crashes on Launch

Likely cause: Denuvo DRM or antivirus interference. Fix: Add game folder to antivirus exclusions. Verify game files on Steam/Epic. Update VC++ redistributables.

Denuvo Performance Impact

Denuvo Anti-Tamper can cause 5-15% CPU overhead. Fix: Ensure Denuvo is properly initialized by not alt-tabbing during first launch. Close background CPU-heavy apps.

VRAM Usage Too High

UE5's Nanite + Lumen can exceed 8GB VRAM at high settings. Fix: Lower texture quality to Medium. Disable RT. Use FSR/XeSS instead of DLSS (lower VRAM overhead).

Motion Sickness / Blurry Image

Likely cause: Frame Generation artifacts or low FSR quality. Fix: Set upscaling to Quality or Balanced. Disable motion blur. Increase FOV in settings. Enable DLSS instead of FSR if available.

Ultra-Wide Monitor Support

The game supports 21:9 and 32:9 aspect ratios, but HUD elements may be stretched at extreme aspect ratios. To fix:

Set resolution to native ultra-wide in settings
If HUD is misaligned, navigate to %LOCALAPPDATA%\LEGODCGame\Saved\Config\WindowsNoEditor\GameUserSettings.ini and add: ResolutionSizeX=3440, ResolutionSizeY=1440

Controller Support

Full support for Xbox, PlayStation, and Nintendo Switch Pro controllers. Steam Input recommended for Nintendo controllers. The game also supports HDR on compatible displays.