Multi Frame Generation (MFG): how DLSS 4 and 4.5 create up to 5 frames per rendered one

How multi frame generation works

The game renders frame N and frame N+1, and a model running on the tensor cores uses motion vectors and optical flow to build intermediate images between them. Regular frame generation (DLSS 3, FSR 3, XeSS 2) adds one extra frame — the 2X mode. Multi Frame Generation inserts three frames (4X), and DLSS 4.5 up to five (6X). To present those frames evenly, RTX 50 cards use hardware flip metering: the display engine paces the frames instead of the CPU.

Dynamic Multi Frame Generation in DLSS 4.5 picks the multiplier on the fly: on a 240 Hz monitor with 70 FPS it switches to 3X, and in a light 120 FPS scene to 2X, so the output never overshoots the refresh rate. NVIDIA describes it as generating only the frames needed to reach the target frame rate.

What players actually get

The FPS counter rises almost in line with the multiplier: at a 60 FPS base, 4X gives roughly 200–230 frames (some GPU time goes into generation itself) and 6X about 300+. That noticeably improves smoothness on 240–480 Hz monitors. But mouse and keyboard response stays tied to the base 60 frames: the game processes input only in real frames, and interpolation also has to hold back the next frame. Details are in the article on frame generation latency.

That is why MFG is a tool for turning good into very smooth, not for making 25 FPS playable. At a low base you get artifacts on the HUD, thin objects and fast turns, and the latency feels like a floaty mouse. NVIDIA Reflex is always enabled alongside MFG to shorten the render queue.

When to enable it and how to set it up

Turn MFG on if you get a steady 60+ FPS without generation, have a 165 Hz or faster monitor and play a single-player or co-op game. Competitive shooters such as CS2 or Valorant don't need it: minimum latency and real frames matter more there. Pick upscaling first (for example DLSS 4 Quality), then enable 3X or 4X; 6X makes sense on 360–500 Hz displays.

A frame cap (V-Sync in the NVIDIA control panel or a limit just below the refresh rate) together with G-Sync removes tearing. If a game supports only regular DLSS Frame Generation, the multiplier can be overridden in the NVIDIA app (DLSS override). For GPUs without MFG there are alternatives: driver-level Smooth Motion, AMD AFMF and Lossless Scaling.

• Base without generation: 60+ FPS (45–50 minimum for single-player games)
• Monitor: 165–240 Hz for 3X–4X, 360+ Hz for 6X
• Reflex is enabled automatically; VRR (G-Sync) is recommended
• Turn it off in esports titles