Hands-On With DLSS 5: Our First Look At Nvidia's Next-Gen Photo-Realistic Lighting

Digital Foundry hands-on with NVIDIA DLSS 5 (GTC, San Jose)

What DLSS 5 is

• A new neural-rendering pass from NVIDIA that applies machine learning to lighting, described as “next‑gen”/photo‑realistic lighting.
• Intended as a complementary DLSS feature alongside Frame Generation and DLSS Super Resolution — not a replacement for geometry or textures.
• Works from a game’s base inputs (color, motion vectors, base render) and produces enhanced lighting: improved specular, subsurface scattering, self‑shadowing, contact shadows, more realistic reflections, hair/eye highlights, fog integration, etc.
• Integrated into NVIDIA’s toolchain (Streamline) and intended to be tunable by developers.

Demos and practical effects shown

Digital Foundry and NVIDIA demonstrated DLSS 5 across several game scenes and engines, showing substantial lighting and material improvements even on non‑ray‑traced base renders.

• Resident Evil (the “Grace” scene)

  • Dramatic improvement in facial lighting and materials: more convincing skin speculars, hair lighting, eye highlights, jacket speculars, and realistic wet lamp post reflections.
  • Presenters compared DLSS 5 to a path‑traced render and found the result extremely close in perceived fidelity.

• Starfield

  • Large uplift for character rendering and material/specular behavior in a non‑ray‑traced base render.
  • Occasional screen‑space artifacts remained where base render limitations persist.

• Oblivion Remastered (Unreal Engine 5 with Lumen)

  • Software Lumen appeared more granular: tighter shadows, improved occlusion on masonry, windows/fascias that read more correctly, and much better character rendering.

• Assassin’s Creed Shadows

  • Environmental lighting and foliage/shadow fidelity significantly improved; results sometimes resembled ray‑traced shadows despite running on non‑ray‑traced base renders.

• Simpler engines

  • NVIDIA noted applicability even to simple engines (e.g., Minecraft) if games can supply color and motion vectors.

Technical and deployment notes

• The GTC demo ran using two very high‑end NVIDIA cards (two RTX 5090s); NVIDIA says they already have single‑GPU implementations in the lab and intend single‑GPU support for consumers.

• Target shipping timeframe (NVIDIA’s stated intent):

  Fall 2026

• Performance: presenters reported generally real‑time, playable frame rates in the demos, with occasional hitches; optimization and VRAM requirements remain open questions.

• Scalability: NVIDIA claims DLSS 5 should scale with output resolution and expects versions that will run across a range of GPUs, but exact hardware requirements (which cards and at which resolutions) are still uncertain.
• DLSS 5 is a separate selectable component in settings (alongside frame generation and upscaling). Developers can tune or exclude it per title.

Limitations, concerns and controversies

• DLSS 5 depends on the base render; it can’t perfectly recreate light when base data is insufficient — screen‑space errors and artifacts were noted.
• It changes the visual presentation of games, raising questions about artistic intent and whether the output matches what developers intended. This could lead to third‑party mods or community re‑tuning.
• Some character improvements may be controversial (different facial appearance/expressiveness). Developers may need tuning options or explicit exclusions.
• VRAM and performance optimization will be key to broad adoption on mainstream hardware.

Follow‑ups and coverage

• Digital Foundry will publish a longer, in‑depth video and analysis based on several hours of demos and conversations with NVIDIA engineers.
• Presenters emphasized these were real, interactive gameplay demos (not canned cinematics).

Main speakers / sources

• Digital Foundry presenters: Rich (host) and Oliver McKenzie.
• Demonstrations and technical commentary from NVIDIA engineers (onstage/demo team).
• Developer sign‑off referenced (Todd Howard for Starfield).
• Event / context: Digital Foundry DirectX special at NVIDIA GTC, San Jose.