Welcome to the RTX 4000 MFG Unlock Community!

[FirstEverTech]

👋 Welcome to the RTX 4000 MFG Unlock Community!

This is a place for technical discussion, testing, and collaboration around unlocking Multi‑Frame Generation (MFG) 3×/4× on NVIDIA RTX 4000 series GPUs.

What this project is about

We’ve discovered that:

• MFG 3×/4× works on RTX 4000 cards when enabled via NVIDIA Profile Inspector.
• The driver generates the extra frames correctly – benchmarks like 3DMark and Cyberpunk 2077 confirm it.
• A black overlay is deliberately rendered on top, while the game runs normally underneath.
• This overlay is controlled by logic in nvlddmkm.sys (string ShowEvalModeOverlay, conditional jump at offset 0x14C8A58).

The goal is to better understand the mechanism, share findings, and explore whether the limitation is truly hardware‑based or just artificially enforced by the driver.

What you can do here

• Share your own test results – if you have an RTX 4070 Ti, 4080, 4090 or other 4000 series card, run benchmarks and post your numbers.
• Ask technical questions – about the reverse engineering, driver signing, Windows security features (KMCI, Secure Boot), or anything else.
• Discuss NVIDIA’s feature segmentation – we’re here to have an open, technical conversation.
• Help with additional research – if you have experience with driver analysis, Ghidra, or kernel‑mode debugging, your input is highly welcome.

Ground rules

• Keep discussions technical and constructive.
• No distribution of modified drivers or binaries – this repository is for research and documentation only.
• Respect the legal disclaimer in the README – we’re here to understand, not to break things.

Let’s learn together and see what’s really possible with RTX 4000.

Welcome, and thanks for being part of this!

— Marcin (FirstEver)

[polymetal0]

Hi there,

Sorry if this was already taken into account, but could this repo be of any help? https://github.com/jp7677/dxvk-nvapi

Specifically:

DXVK_NVAPI_GPU_ARCH, when set to one of supported NVIDIA GPU architecture IDs will override reported GPU architecture. Currently supported values are:

• GK100 (Kepler)
• GM000 (Maxwell Gen1)
• GM200 (Maxwell Gen2)
• GP100 (Pascal)
• GV100 (Volta)
• TU100 (Turing)
• GA100 (Ampere)
• AD100 (Ada)
• GB200 (Blackwell)

Sounds too good to be true, but this could do the trick on Linux if NPI works. And how could this value be modified on Windows NVAPI?

I hope this helps move the research forward! nice work!

[FirstEverTech]

Honestly, I'm so swamped with current work that I'd have to clone myself...

I'll try to take a look at it when I have a free moment :)

[polymetal0]

Hi again,

I've been doing some more research and found out some interesting things:

• Streamline dlls 2.8.0 show this black screen behavior, but latest (2.11.1) do not (DLSS FG stays at 2x and is not overridden by NPI), so this has been patched and most likely is an artificial limitation.
  UPDATE: it was not Streamline dlls, it was the drivers.
• DLSS Enabler https://www.nexusmods.com/site/mods/757 unlocks MFG in game settings and can get up to x6 with latest Streamline dlls. But this mod is meant to work on all GPUs, so it supposedly uses FSRFG + MFGx2 on 4000 series GPUs. The thing is, turning all mod's settings off (or to DLSS) while overriding MFG from NPI works with no black screen.
  UPDATE: DLSS Enabler actually forces FSRFG.
• DLSS Enabler is based on DLSS Spoofer https://github.com/nitrog0d/DLSSSpoofer which spoofs GPU architecture. I cloned the repo and tried to modify the code to spoof a 5000 series card to no avail, but DLSS Enabler makes it work somehow.
  UPDATE: I managed to spoof a Blackwell GPU and make it work

So at this point, there are several possibilities:

1. MFG is achieved by using FSRFG+MFGx2
2. MFG works because Optiscaler (bundled with DLSS Enabler) acts as a workaround to remove the black screen
3. DLSS Enabler's code (based on DLSS Spoofer) actually gets the job done and makes native MFG work

If we could isolate the spoofing part of DLSS Enabler by modifying DLSS Spoofer's code, we could find out if native MFG is actually working.
UPDATE: Take a look at my fork below and try it out

Tested with RTX 4070S and Pragmata / LEGO Batman

[polymetal0]

Just uploaded some good stuff :)

https://www.nexusmods.com/site/mods/2038

EDIT: I got it figured out! you can download the .dll and try it out whenever you can. Also share this in the forums if you like