How to enable dlss 4.5

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Last updated: April 4, 2026

Quick Answer: DLSS 4.5 is not a real feature or technology; DLSS (Deep Learning Super Sampling) is an NVIDIA technology that enhances frame rates and image quality. To enable DLSS, you need an NVIDIA RTX graphics card, a compatible game, and the DLSS option within the game's graphics settings. Version 4.5 is not applicable to DLSS itself.

Key Facts

DLSS stands for Deep Learning Super Sampling.
DLSS is exclusive to NVIDIA RTX graphics cards.
DLSS requires support from both the game and the graphics driver.
The latest version of DLSS is DLSS 3.5, which includes Ray Reconstruction.
There is no DLSS 4.5 currently available.

Understanding DLSS (Deep Learning Super Sampling)

DLSS, or Deep Learning Super Sampling, is a revolutionary AI-powered image upscaling technology developed by NVIDIA. Its primary goal is to boost performance in video games by rendering frames at a lower resolution and then using AI to intelligently upscale them to the desired output resolution. This process not only increases frame rates, leading to smoother gameplay, but also often enhances visual fidelity, making games look sharper and more detailed than traditional rendering methods.

How DLSS Works

At its core, DLSS leverages specialized Tensor Cores found in NVIDIA's GeForce RTX graphics cards. These cores are designed for deep learning operations. When a game is running with DLSS enabled, it renders the game world at a lower internal resolution. Then, the DLSS software uses a deep neural network, trained on a massive dataset of high-resolution images, to reconstruct the missing pixels and upscale the image to the target resolution (e.g., from 1080p to 4K). This reconstruction process is highly sophisticated, aiming to preserve and even enhance details like textures, edges, and anti-aliasing, which can often be lost in simpler upscaling techniques.

DLSS Versions and Features

NVIDIA has continuously improved DLSS over the years, releasing several versions with enhanced capabilities. It's important to note that there is no 'DLSS 4.5'. The current iteration is DLSS 3.5, which introduced a significant feature called Ray Reconstruction. Ray Reconstruction is an AI-driven technique that replaces hand-tuned denoisers with new, AI-trained ones to improve the quality of ray-traced effects. This results in more accurate, immersive, and visually stunning lighting, reflections, and shadows in supported games.

Previous versions of DLSS have focused on improving the core upscaling engine and frame generation. DLSS 3, for instance, introduced 'Optical Multi Frame Generation,' which can generate entirely new frames between traditionally rendered frames, further boosting frame rates, especially in CPU-bound scenarios. However, DLSS 3's Frame Generation is exclusive to the RTX 40 Series GPUs.

Enabling DLSS in Games

To enable DLSS, several conditions must be met:

Hardware Requirement: You must have an NVIDIA GeForce RTX graphics card (RTX 20 Series, RTX 30 Series, or RTX 40 Series). Older GTX cards do not support DLSS.
Game Support: The game you are playing must have integrated DLSS support. Game developers need to implement DLSS into their titles.
NVIDIA Driver: Ensure you have the latest NVIDIA Game Ready drivers installed. These drivers are crucial for optimal performance and compatibility with DLSS and other new technologies.

Once these prerequisites are in place, enabling DLSS is typically straightforward:

Launch the game.
Navigate to the game's graphics or video settings menu.
Look for an option labeled 'DLSS' or 'NVIDIA DLSS'.
Select the desired DLSS quality mode. Common options include:
- Quality: Prioritizes image quality, offering a slight performance boost.
- Balanced: A good mix of image quality and performance.
- Performance: Prioritizes frame rate, with a more noticeable performance increase but potentially a slight reduction in image sharpness.
- Ultra Performance: Offers the highest frame rates, suitable for very high resolutions like 8K, but with a more significant impact on image quality.
If the game supports DLSS 3 Frame Generation (and you have an RTX 40 Series GPU), you may see a separate toggle for that feature.

If you do not see a DLSS option in your game's settings, it means the game does not support it, or you may not have the required hardware.

Troubleshooting DLSS Issues

If DLSS is not working as expected, consider the following:

Update Drivers: Always ensure your NVIDIA drivers are up-to-date.
Check Game Patches: Sometimes, DLSS support is added or improved through game patches.
Verify Game Settings: Double-check that DLSS is enabled and the correct preset is selected. Sometimes, changing other graphics settings can interfere.
Restart Game/System: A simple restart can often resolve temporary glitches.
Monitor Hardware: Ensure your GPU is not overheating, which could lead to performance throttling.

Remember, the key to enabling DLSS lies in having the right hardware, a compatible game, and accessing the in-game settings. The concept of 'DLSS 4.5' does not exist in NVIDIA's current or announced technology roadmap.