PC Gamer Forces DLSS 5 Onto an RTX 4070 Super in Project DIVA Mega Mix+
Kinghorn opens by noting that DLSS 5 is officially available only on NVIDIA's RTX 50-series cards. NVIDIA has said it will eventually reach the 40-series, but she didn't want to wait. The only way to get it running on her RTX 4070 Super was unofficial. You can track down the needed files yourself, she writes, but some tools automate the process. She used DLSS5 Manager and experimented with its adjustable "Live Flow" setting.
She chose Hatsune Miku: Project DIVA Mega Mix+, Sega's rhythm game built around Crypton Future Media's Vocaloid characters. By her account it has an anime-adjacent art style that DLSS 5 "has no business" processing. Before the mod, she says, the game ran at a fairly solid 60 fps. She calls that a best case, because performance varies a lot from song to song.
After enabling Live Flow, she says her frame rate "tanked" to the point where hitting timed button prompts became almost impossible. In a rhythm game, that means the game stops working. Her workaround was to avoid the gameplay entirely. Project DIVA lets you watch its music videos without the rhythm mechanics, so she built a running order in the Custom Playlists menu and watched the videos with the effect applied.
The story ends with six "DLSS 5 off / DLSS 5 on" comparison pairs showing close-ups of Hatsune Miku and Luka Megurine. The subhead, "Welcome to anime Hell," is her verdict. Treat that as one writer's aesthetic reaction. No image-quality measurement was made. The article also leaves out the DLSS5 Manager version, the driver, the resolution, and a measured post-mod frame rate, so it's one data point on one PC, not a benchmark.
What NVIDIA Built DLSS 5 to Do, and Why Project DIVA Falls Outside It
PC Gamer calls DLSS 5 "upscaling," but that's not how NVIDIA describes it. In a developer blog post dated September 22, 2026, NVIDIA calls it "3D-Guided Neural Rendering": a final stage in the graphics pipeline that takes the game engine's finished frame, including artist-made geometry, textures, and lighting buffers, and treats it as a fixed foundation. Using the frame's color and motion vectors, the model is meant to add lifelike lighting and material detail while keeping scene structure, character identity, and the artist's intent intact. Earlier DLSS versions were mostly about rendering fewer pixels and reconstructing the rest. DLSS 5 changes how the frame looks.
NVIDIA says the model works one frame in, one frame out, using the engine's motion vectors so results stay stable from frame to frame. That's different from offline generative models, which process chunks of frames at once. The company says the model runs locally on a single GeForce RTX 50-series GPU at up to 4K.
The key point for this story is how much NVIDIA's design depends on developers. According to NVIDIA, studios can pick from several models and mix them across scenes, gameplay, and cutscenes. They can adjust "Structure Intensity" and "Tone Intensity" to tune fine detail and the overall lighting and color response. They can also use semantic AI masking and engine-level masks to hold the effect back from specific scene elements or asset groups. NVIDIA's launch example is NBA 2K27: developer Visual Concepts uses a per-pixel control mask to keep scanned player faces accurate while improving skin, hair lighting, and contact shadows.
NVIDIA also says input quality matters. DLSS 5 improves traditional rasterized graphics, according to the company, but richer source data such as ray-traced or path-traced lighting produces much more accurate results. Project DIVA Mega Mix+ has no DLSS 5 integration, no developer-authored masks, and a flat, cel-shaded look that's the opposite of the photorealistic lighting NVIDIA uses in its demos. PC Gamer's article doesn't include enough technical detail to say exactly why the Miku comparisons came out as they did. Still, a forced, untuned injection is clearly not the product NVIDIA describes, and it would be unfair to judge DLSS 5's intended output from it.
The Leaked nvngx_dlssnr.dll Behind Unofficial DLSS 5 Installs
Unofficial DLSS 5 tools exist because of a leak. A couple of days before NBA 2K 27's launch, modders were able to use DLSS 5 early through a DLSSNR DLL found in an early access version of NBA 2K 27. An earlier WindowsForum report named the library nvngx_dlssnr.dll and said it should therefore be treated as a pre-release, experimental artifact with uncertain provenance and uncertain equivalence to whatever NVIDIA ultimately ships.
It spread quickly. TweakTown reports that after modders successfully injected DLSS 5 into Control, the mod spread like wildfire across the internet, with a number of gamers and tech influencers testing DLSS 5 across dozens of titles. RTX 40-series support took a further patch. Modder Uncle Burrito managed to modify Nvidia's leaked DLSS 5 DLL, originally discovered in the early-access build of NBA 2K27, to work with RTX 40-series graphics cards. Nvidia's original DLL contained CUDA binaries that were seemingly restricted to Blackwell-based RTX 50-series GPUs, but the modder patched them to run on the older Ada Lovelace architecture.
That's the background to Kinghorn's install. PC Gamer doesn't say which build of the library DLSS5 Manager uses, and no other outlet has reported on DLSS5 Manager itself. Other bundles exist too: Tom's Hardware has covered an all-in-one 'DLSS Unlocked' mod that it says brings DLSS 5 and multi-frame generation to RTX 20, 30, and 40 series cards. Whatever the wrapper, these tools run patched NVIDIA code that NVIDIA never released for these GPUs or these games.
The Frame-Rate Cost of DLSS 5 on RTX 40-Series Hardware
Kinghorn's broken rhythm game matches every measured result so far. Here are the reported numbers from other unofficial tests:
| GPU | Game | Without neural rendering | With DLSS 5 mod | Reported by |
|---|---|---|---|---|
| RTX 5070 Ti | Control | 71 fps | 35 fps | TweakTown |
| RTX 4090 | Control | ~130 fps | ~82 fps | TweakTown |
| RTX 3080 | Deep Rock Galactic | 138 fps | 4 fps | Wccftech, via WindowsForum |
The RTX 4090 figures come from TweakTown, which reported performance from roughly 130 FPS down to about 82 FPS, representing a 58% reduction in performance. The math doesn't support that percentage. Going from 130 to 82 fps is a loss of about 37%. Put the other way, performance without the mod is about 58% higher. The frame rates are the useful part, and they show a large but survivable hit on NVIDIA's former flagship. The same outlet listed a mod that drops performance from 71 FPS to 35 FPS on an RTX 5070 Ti, a Blackwell card, which suggests the leaked build is expensive even on officially supported hardware.
Older hardware does much worse. Wccftech reports that modder Flourek has run the same unofficial DLSS 5 neural-rendering setup on a GeForce RTX 3080 in Deep Rock Galactic, and enabling Neural Rendering reportedly reduced performance from 138 FPS to 4 FPS. Tech Insider cites reporting that render latency on RTX 30-series cards jumped from around 29 milliseconds in a standard render path to roughly 3,326 milliseconds once neural rendering activated.
The RTX 4070 Super sits well below the RTX 4090 in NVIDIA's Ada lineup. So a game capped at 60 fps falling low enough to break precise timing is about what the numbers above would predict, though PC Gamer didn't publish a measured figure to confirm it. A 60 fps game that loses a third or more of its frame rate can still be fine for watching a cutscene. In a rhythm game, where scoring depends on hitting notes at exact moments, that loss makes the game unplayable. Kinghorn's switch to watching music videos shows the right way to think about it: on this hardware, the mod is fine for looking at scenes and useless for anything you actually have to play.
NVIDIA's RTX 40-Series Promise for DLSS 5 Has No Date
Official status has changed since launch. TweakTown reports that NVIDIA launched DLSS 5 with NBA 2K 27, when the company initially announced DLSS 5 would be RTX 50 series exclusive. NVIDIA even went so far as to say there is no fallback path for RTX 40 series GPUs. Days later, in a statement TechPowerUp first reported, NVIDIA said Ada Lovelace would get DLSS 5, but noted that support will not arrive until the company further optimizes DLSS 5 performance on Blackwell GPUs. NVIDIA is planning to introduce new DLSS 5 models this fall, so development work on 40 series enablement won't come until after those models are complete.
Tom's Hardware writes that DLSS 5 is supposed to come to RTX 40-series cards later this year. NVIDIA's own September 22 developer post, however, still describes the model as running on RTX 50-series GPUs and lists availability only in NBA 2K27 on RTX 50-series desktop and laptop GPUs, plus GeForce NOW Ultimate streaming from NVIDIA's RTX 5080 cloud machines. Neither the developer post nor NVIDIA's March 2026 GTC announcement lists Project DIVA Mega Mix+ as a supported title.
Two things should shape RTX 40 owners' expectations. First, the modder benchmarks back up NVIDIA's stated reason for the delay. As Tech Insider puts it, the most plausible explanation for the day-one exclusion is performance, not raw compatibility. Second, even when Ada support arrives, it will only apply in games whose developers have integrated DLSS 5, with the masks and intensity controls NVIDIA describes. A rhythm game with no integration will get none of that from an official driver.
What This Means for RTX 40 Owners Tempted by DLSS 5 Mods
If you just want to see what neural rendering does, a mod tool will show you, and PC Gamer's experiment suggests stills and non-interactive scenes are where it's tolerable on mid-range Ada cards. If you want to play with it, wait for NVIDIA's official Ada support and for games built for it. The reported performance costs are big enough that the frame rate you started with is the first thing to go, and timing-sensitive games like rhythm titles, fighters, and competitive shooters will feel it most.
Nobody has published a security review of these tools, and PC Gamer's article gives neither a safe download source nor an install procedure. We won't give one either. What is established is that they run a leaked, patched pre-release NVIDIA library that NVIDIA doesn't support on RTX 40-series cards.
- DLSS 5 is officially available only on RTX 50-series GPUs, in NBA 2K27 and through GeForce NOW Ultimate, according to NVIDIA's September 22, 2026 developer post.
- NVIDIA has said RTX 40-series support will come after further Blackwell optimization and new models planned for this fall, but it has given no release date.
- Unofficial tools such as DLSS5 Manager rely on a patched copy of the leaked nvngx_dlssnr.dll from NBA 2K27's early-access build, not an NVIDIA release.
- Reported costs range from about 130 to 82 fps on an RTX 4090 in Control to 138 to 4 fps on an RTX 3080, so expect lower-tier cards like the RTX 4070 Super to struggle.
- DLSS 5 is designed to be tuned by developers through masks and intensity controls, so a forced injection into a stylized game like Project DIVA Mega Mix+ doesn't represent NVIDIA's intended output.
- If you experiment anyway, stick to non-interactive modes like Project DIVA's Custom Playlists, and don't judge the technology by gameplay on an unsupported card.
Kinghorn's regret over what DLSS 5 did to Miku is subjective. The frame-rate collapse on her RTX 4070 Super is not, and it matches every other unofficial measurement so far: on Ada hardware, DLSS 5 runs, but it isn't ready to play with. The next official milestone is NVIDIA's fall model update, which the company says has to land before RTX 40-series enablement work starts. Until then, forcing DLSS 5 onto a 40-series card gets you screenshots, not a playable game.