The August DLSS 5 leak gave modders an unofficial preview in Control. NVIDIA has since announced official availability in NBA 2K27; the leak tests remain separate from supported release performance.
The leaked files, reportedly discovered in the early-access PC version of NBA 2K27, were extracted by modders and tested in games including Control. Early experiments showed noticeable changes to lighting, shadows and character appearance, but they also pointed to a potentially significant performance cost.
What is NVIDIA DLSS 5?
NVIDIA unveiled DLSS 5 in March 2026 as a real-time neural rendering technology designed to bring more realistic lighting and materials to games.
The company describes it as a major step beyond traditional rendering, using neural networks to generate visual detail and photorealistic effects while working alongside a game's existing rendering pipeline. NVIDIA originally scheduled DLSS 5 for fall 2026; subsequent official availability is described in the update below.
Unlike DLSS features primarily focused on upscaling or frame generation, DLSS 5 is aimed at changing elements of the final rendered image itself. NVIDIA says the technology can help create more realistic lighting, materials and other visual effects in real time.
DLSS 5 DLL found in NBA 2K27
The leak reportedly involved a 158MB NVIDIA library named nvngx_dlssnr.dll, found inside the early-access version of NBA 2K27.
The file was subsequently extracted by members of the RenoDX modding community, who managed to integrate the technology into Remedy's Control. The experimental implementation gave modders control over several neural-rendering effects, particularly on character models.
The discovery offered an early unofficial look before NVIDIA's subsequent availability announcement. The leaked DLL let modders experiment outside an NVIDIA-controlled demonstration or an officially supported implementation.
Modders tested DLSS 5 in Control
In Control, the experimental implementation can alter the appearance of characters through neural-rendering effects.
Reports describe changes to facial detail, skin shading, lighting and shadows. Several adjustable styles and intensity controls have also been exposed by the modding community.
The results have been mixed.
Some demonstrations show more detailed lighting and materials, while other examples have drawn criticism because the AI-generated changes can make characters look noticeably different from the game's original artistic presentation. That revived a debate that began when NVIDIA first demonstrated DLSS 5: how much should AI change a game's intended visual appearance?
NVIDIA has previously said developers will retain control over how DLSS 5 is used, giving them the ability to determine where and how neural rendering is applied.
RTX 5070 Ti saw a major performance drop in an early test
The most striking part of the early testing was the performance impact.
A test by a RenoDX modder, as relayed by Compusemble and reported by godisageek.com and Tom's Hardware, reportedly showed frame rates on an RTX 5070 Ti at 4K falling from approximately 71 fps to 35 fps when the experimental Neural Rendering effect was enabled. That's roughly a 51% reduction in frame rate.
The result needs to be treated carefully.
This was leaked software running through an unofficial modding implementation in a game that was not designed around the feature. The test therefore cannot be treated as an official benchmark for the supported version of DLSS 5.
Performance in a supported release must be assessed separately from this unofficial Control implementation.
DLSS 5 may be more demanding than earlier versions
NVIDIA's recent DLSS generations have increasingly expanded the role of AI in graphics.
DLSS 4.5, for example, introduced a newer transformer model for Super Resolution and expanded Multi Frame Generation on supported RTX 50-series GPUs. DLSS 5 takes the concept in another direction by applying neural rendering to visual elements such as lighting and materials rather than focusing only on reconstruction or generated frames.
That broader role could explain why the leaked implementation appeared considerably more demanding in early testing.
It also means DLSS 5 may ultimately depend heavily on how developers integrate the technology into individual games.
DLSS 5 compatibility
The leaked implementation was initially associated with RTX 50-series hardware, but modders also experimented with getting it to work on RTX 40-series GPUs.
Tom's Hardware reported that modders patched incompatible CUDA components to get the technology running on Ada Lovelace hardware such as the RTX 4080. However, this was an unofficial modification and should not be interpreted as confirmation of official NVIDIA support.
Official support must be distinguished from these unofficial modifications. NVIDIA's subsequent availability announcement identifies GeForce RTX 50 Series GPUs and laptops, alongside GeForce NOW; the modding results do not establish official RTX 40 Series support.
Official availability after the leak
Update, October 2, 2026: NVIDIA's availability article, dated September 1, says DLSS 5 is available in NBA 2K27 for GeForce RTX 50 Series desktop and laptop GPUs and through GeForce NOW. This is later official release information, separate from the August leak and the unofficial Control benchmarks discussed above.
NVIDIA had originally announced DLSS 5 on March 16, 2026, with a fall release window and support from publishers including Bethesda, CAPCOM, NetEase, Ubisoft and Warner Bros. Games. That original window is historical context, not the current availability status.
What the DLSS 5 leak really tells us
The leak alone does not establish the quality or performance of the supported release.
What it does show is the direction NVIDIA is taking.
DLSS is moving beyond simply reconstructing images or generating additional frames. NVIDIA is increasingly using neural networks as part of the rendering process itself, with the goal of making real-time graphics look more sophisticated and realistic.
That could make DLSS 5 an important step for PC gaming if NVIDIA can balance visual quality with performance.
The leaked results remain an unofficial early experiment. Assessments of the official release should use supported games, drivers and hardware, rather than extrapolating from the Control modification.
