DLSS 2.5 Overview
DLSS 2.5 (specifically 2.5.1) is often cited by the community as the "holy grail" of DLSS versions for older titles. Unlike previous versions, DLSS 2.5 completely removed the forced internal sharpening filter. This allows for a much cleaner image without the "ringing" artifacts or over-sharpened edges seen in DLSS 2.4 and earlier.
Download DLSS 2.5 DLL
- Version: 2.5.1
- File name: nvngx_dlss.dll
- File size: ~18MB
- Release date: 2022
* Best choice for: RDR2, God of War, Cyberpunk 2077 (pre-2.0).
Release Information
Released in late 2022, DLSS 2.5.1 became standard for many games. Its primary contribution was giving developers (and modders) control over sharpening by removing it from the upscaler itself.
DLSS 2.5 Changelog
- Removed: Forced sharpening filter (Major improvement for image quality)
- Reduced ghosting in high-contrast scenes
- Fixed "ringing" artifacts around thin objects
- Improved stability in open-world titles
Games Best Suited for DLSS 2.5
These games often look significantly better with DLSS 2.5.1 than their default shipping DLL:
- Red Dead Redemption 2 (Fixes sharpening halos)
- God of War
- Horizon Zero Dawn
- Dysmantle
How to Install DLSS 2.5 DLL
- Download the
nvngx_dlss.dllfile (version 2.5.1). - Locate the game's installation folder (e.g., steamapps/common/GameName).
- Open the game's "bin", "binaries", or "Win64" directory.
- Backup your original file. Rename it to
nvngx_dlss.dll.bak. - Copy and replace the existing
nvngx_dlss.dllfile with the new 2.5 version. - Launch the game. Note: You may need to adjust in-game sharpness if the game previously relied on DLSS sharpening.
DLSS Version Comparison
| Version | Image Quality | Sharpening | Ghosting |
|---|---|---|---|
| DLSS 2.5.1 | Excellent (Soft/Natural) | Removed (Manual) | Low |
| DLSS 2.4 | Good | Forced (High) | Medium |
| DLSS 3.1 | Excellent (Presets) | Variable | Very Low |
Common Issues
- Image looks too soft? Enable in-game dedicated sharpening (like CAS) or use NVIDIA Control Panel sharpening.
- Game crashing on startup? Verify file permissions.
Frequently Asked Questions
Why use DLSS 2.5 over 3.0?
DLSS 2.5 is often preferred for older games because it doesn't try to "guess" as much as newer models, leading to a very stable image without weird artifacts. It's the "safe" upgrade.
Does this work on RTX 40 series?
Yes, DLSS 2.5 works on all RTX cards including 20, 30, and 40 series.