How to Turn On NVIDIA DLSS 4.5 Ray Reconstruction

NVIDIA DLSS 4.5 Ray Reconstruction is available now for supported GeForce RTX games through an Early Access update in the NVIDIA app.
NVIDIA says the new model is built to improve image quality in ray-traced and path-traced games, and gamers can turn it on without waiting for the full September release.
The setup only takes a few steps, but the option appears only where the game and driver support it, so if you don’t see it that’s why.

What Even is DLSS 4.5 Ray Reconstruction

NVIDIA says DLSS 4.5 Ray Reconstruction uses a second-generation transformer model to rebuild parts of a ray-traced image with better detail and stability. Ray Reconstruction replaces older hand-tuned denoisers, which are used to clean up noisy ray-traced lighting.

The feature works across GeForce RTX GPUs, but each game still needs Ray Reconstruction support. A newer model cannot add ray tracing or path tracing to a game that does not already support those features.

So basically: NVIDIA is using a newer AI model to make ray-traced graphics look cleaner, sharper, and more stable. It replaces traditional denoisers (tools that clean up visual noise and grain from ray-traced lighting).

This doesn’t give games ray tracing by itself. The game still needs to support Ray Reconstruction and already have ray tracing or path tracing.

How to get the NVIDIA app update.

NVIDIA says the new Ray Reconstruction model is available through its Early Access releases. The regular release is planned for September.

1. Open the NVIDIA app.
2. Go to Settings.
3. Open About.
4. Turn on Early Access releases.
5. Install the available NVIDIA app update when prompted.

How to turn on DLSS 4.5 Ray Reconstruction

After the Early Access update is installed, NVIDIA provides the following steps for supported games:

1. Open the Graphics section in the NVIDIA app.
2. Select a supported game. You can also use Global Settings if you want the setting applied to every supported game.
3. Scroll to Driver Settings.
4. Open DLSS Override – Model Presets.
5. Select Custom.
6. Open the Ray Reconstruction menu.
7. Choose Recommended or Preset F.
8. Select Apply.

NVIDIA gives the same setup steps in its Gamescom 2026 DLSS 4.5 guide. Gamers who prefer to avoid Early Access software can wait for the regular NVIDIA app release in September.

What changed with the new model

NVIDIA says the new model has 35% more compute capability and processes 20% more parameters while keeping performance close to the earlier model. NVIDIA also says the larger training set helps improve lighting accuracy, motion clarity, and image stability.

• Ray-traced lighting: The model aims to rebuild cleaner lighting from limited ray samples.
• Motion: NVIDIA says the update improves clarity and stability while scenes move.
• Game control: Developers get more control over how the model uses image data from earlier frames.

You may not see the option in every game

Ray Reconstruction support is game-specific. NVIDIA keeps a current list of games and apps that support its RTX features, including DLSS and Ray Reconstruction.

If the setting is missing, check that the NVIDIA app and GeForce driver are current, then confirm that the game supports Ray Reconstruction. The Early Access update changes the available model, but it does not make unsupported games compatible.