What is DLSS 4.5?
DLSS 4.5 is Nvidia's latest AI‑driven upscaling technology built on a second‑generation transformer model. It delivers sharper details, reduced artefacts, and far better temporal stability compared with earlier DLSS versions, even though the gains are not always reflected in benchmark charts.
How to Enable DLSS 4.5 on Unsupported Games
Many older titles lack the DLLs required for native DLSS 4.5 support. Users can manually swap the newer DLSS files using tools such as DLSS Swapper together with Nvidia Profile Inspector. Though not officially recommended, this method unlocks the higher‑fidelity presets on legacy games.
- Locate the game’s
dxgi.dll(or equivalent) in the game directory. - Replace it with the DLSS 4.5 version from the Swapper package.
- Open Nvidia Profile Inspector and select the desired DLSS preset (e.g., Preset M).
- Launch the game and verify the DLSS status in the overlay.
Performance and Visual Improvements – Real World Tests
Death Stranding
Even without native support, the swap reveals immediate gains: distant grass blades and terrain textures retain detail while moving, shimmer and breakup are reduced, and color fidelity improves during panoramic camera sweeps.
Deep Rock Galactic
With Preset M enabled, environmental text becomes legible, thin geometry such as wires and hazard stripes stays crisp, and neon lighting looks like genuine light sources. Reflections gain definition, making the switch back to DLSS 4.0 feel like a visual downgrade.
The Callisto Protocol
The AI upscaler refines already‑premium visuals: character models sharpen, surface textures hold together during traversal, and advanced lighting benefits from heightened temporal stability. The result feels closer to a native high‑quality preset than a performance fallback.
Potential Drawbacks
DLSS 4.5’s transformer model is more compute‑intensive. On RTX 20‑ and 30‑series GPUs, which lack native FP8 processing, VRAM usage can rise noticeably. Users may need to balance the visual uplift against potential frame‑rate impacts.
Future Outlook
Because DLSS 4.5 can be retro‑fitted into many existing titles, it is evolving from a situational enhancement to a universal graphics layer. As Nvidia expands official support, even older RTX hardware will continue to benefit from AI‑driven upscaling, promising a more consistent and immersive gaming experience.