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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →DLSS 3.5 does not introduce a new generation of Frame Generation. DLSS 3 brought NVIDIA’s Frame Generation feature; DLSS 3.5’s defining addition is Ray Reconstruction, an AI feature for reconstructing ray-traced lighting in supported games. They do different jobs and can be used together.
What the DLSS version numbers actually mean
DLSS is a collection of features, not one all-or-nothing setting. A game labelled “DLSS 3.5” may offer some combination of Super Resolution, Frame Generation, Ray Reconstruction, DLAA and Reflex. Which features appear depends on the game’s implementation and your GPU. Check the game’s individual graphics settings and NVIDIA’s game and application support list, rather than assuming the version label guarantees every feature.
In this comparison, “DLSS 3.0” is commonly used as shorthand for DLSS 3 and its Frame Generation feature. The meaningful distinction is not a contest between two mutually exclusive presets: it is whether a game uses Frame Generation, Ray Reconstruction, or both.
What DLSS 3 added: Frame Generation
Frame Generation creates additional frames between frames rendered by the game. It uses game-rendered information, including motion vectors, along with optical-flow data and AI processing. The result can make motion look smoother by raising displayed frame rate, but the game simulation still runs at its underlying rendered rate. NVIDIA introduced Frame Generation with DLSS 3 and paired it with Reflex to help manage rendering queues and latency. NVIDIA’s DLSS 3 announcement describes the feature and its Reflex integration.
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- Rendered FPS is the rate at which the game engine produces frames.
- Displayed FPS can include generated frames, so it may be higher than rendered FPS.
- Input latency is the delay between an input and its visible effect. A higher displayed-FPS counter does not by itself mean lower latency.
Reflex is intended to reduce latency by managing the rendering pipeline; it does not turn generated frames into additional game-simulation updates. For that reason, base rendered FPS and frame pacing remain important, especially in latency-sensitive games.
What DLSS 3.5 added: Ray Reconstruction
Ray Reconstruction is an AI-based reconstruction and denoising feature for ray-traced effects. Ray tracing often samples only part of the lighting information needed for a finished image, so games use denoisers to reduce noise and fill in the result. Ray Reconstruction replaces traditional hand-tuned denoising stages with a trained AI model intended to produce cleaner, more stable ray-traced lighting. It does not simply add more ray-tracing samples. NVIDIA describes its approach in its Ray Reconstruction explainer and DLSS technical overview.
Depending on the game, the effects to inspect include reflections, shadows, global illumination and ambient occlusion. Results vary with the game’s implementation, ray-tracing mode, resolution, DLSS setting and scene. Ray Reconstruction is not an upscaler: Super Resolution reconstructs a higher-resolution image from a lower-resolution input, while Ray Reconstruction handles ray-traced lighting and denoising. A game may support Ray Reconstruction alongside Super Resolution or DLAA without requiring Frame Generation.
How the features differ
| Feature | What it does | What to look for |
|---|---|---|
| DLSS Super Resolution | Reconstructs a higher-resolution image from lower-resolution input. | Image quality and performance at the selected output resolution. |
| DLSS Frame Generation | Creates additional frames between game-rendered frames. | Smoother displayed motion, plus possible motion or interface artifacts and latency trade-offs. |
| Ray Reconstruction | Uses AI to reconstruct and denoise ray-traced lighting. | Stability and detail in reflections, shadows and other ray-traced effects. |
| Reflex | Manages the rendering pipeline to reduce latency. | Responsiveness, particularly when Frame Generation is enabled. |
A simplified conceptual pipeline is: the game renders the scene and ray-tracing data; denoising or Ray Reconstruction processes ray-traced lighting; Super Resolution may reconstruct the output image; Frame Generation may insert additional frames; and Reflex helps manage synchronization and latency. The exact implementation and ordering can vary by game.
Does DLSS 3.5 improve Frame Generation?
Not by definition. DLSS 3.5’s named innovation is Ray Reconstruction, not a separate, fundamentally new Frame Generation system. NVIDIA describes DLSS 3.5 as adding Ray Reconstruction to the broader DLSS feature set, which also includes Super Resolution, Frame Generation and DLAA where supported. NVIDIA’s DLSS 3.5 announcement explains the feature addition.
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A game update, driver, or newer model can change Frame Generation behavior independently of the DLSS 3.5 label. To compare Frame Generation itself, identify the actual game and model versions being tested and keep other relevant settings constant. Do not attribute an improvement automatically to “3.5.”
Which GPUs support each feature?
NVIDIA’s original DLSS 3 Frame Generation implementation requires an RTX 40-series GPU. Ray Reconstruction was made available across GeForce RTX generations in supported games, so RTX 20- and 30-series owners can use it without Frame Generation. NVIDIA details this distinction in its DLSS 3.5 announcement.
| GPU generation | Super Resolution | Ray Reconstruction | DLSS Frame Generation | Newer Multi Frame Generation |
|---|---|---|---|---|
| RTX 20 series | Supported in compatible games | Supported in compatible games | Not supported by NVIDIA’s original DLSS Frame Generation | Not established for this generation by the cited NVIDIA DLSS support information |
| RTX 30 series | Supported in compatible games | Supported in compatible games | Not supported by NVIDIA’s original DLSS Frame Generation | Not established for this generation by the cited NVIDIA DLSS support information |
| RTX 40 series | Supported in compatible games | Supported in compatible games | Supported in compatible games | Not the feature being compared here; check current game support |
| RTX 50 series and later | Supported features depend on game and current DLSS implementation | Supported in compatible games | Supported features depend on game and current DLSS implementation | Later DLSS features are separate from the historical 3-versus-3.5 comparison; check current game support |
Support is feature-specific, not guaranteed by a game’s DLSS label. NVIDIA’s current game and application list separates support for Super Resolution, Frame Generation, Ray Reconstruction and newer features.
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To isolate Ray Reconstruction, hold Frame Generation off and compare the same game scene with Super Resolution enabled in both runs: conventional denoising versus Ray Reconstruction. If you also want to assess Frame Generation, run a separate comparison with that setting held constant. Use moving scenes as well as screenshots; a paused image will not reveal every temporal artifact.
- Inspect fine detail in reflections, including signs and bright lights reflected on wet surfaces.
- Watch moving objects crossing reflections, foliage, thin wires, particles and transparent or semi-transparent surfaces.
- Check shadows, volumetric lighting, specular highlights and areas that appear as the camera moves.
- Look for flicker or boiling noise, ghosting and temporal trails, excessive blur, missing detail and instability where previously hidden surfaces become visible.
- Check HUD and interface stability separately: malformed or duplicated interface elements are more likely to implicate Frame Generation than Ray Reconstruction.
“Sharper” does not automatically mean more accurate. Temporal reconstruction can make an image steadier or more detailed-looking without making it identical to a native reference. Judge clarity, stability and artifacts in motion, and repeat the comparison at the resolution and DLSS mode you actually use.
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How to compare performance and latency fairly
Ray Reconstruction is primarily an image-quality feature, not a guaranteed FPS multiplier. A single performance figure can also be misleading if it combines several DLSS features. For example, NVIDIA reported a 4.9× performance figure for Cyberpunk 2077 using Frame Generation, Ray Reconstruction, Reflex and Super Resolution against native 4K rendering; that is a combined-configuration comparison, not an isolated measurement of Ray Reconstruction. NVIDIA’s Cyberpunk 2077 announcement gives that example.
For a useful test, record the GPU and CPU, driver, game build, operating system, resolution, graphics preset, ray-tracing mode, Super Resolution mode, Frame Generation and Reflex status, V-sync, display refresh rate, sharpening setting and capture method. Keep the same scene and settings between runs.
| Test | Super Resolution | Frame Generation | Ray Reconstruction | What it isolates |
|---|---|---|---|---|
| A | Off (native) | Off | Off | Native ray-tracing baseline |
| B | On | Off | Off | Super Resolution with conventional denoising |
| C | On | Off | On | Ray Reconstruction against the same upscaling setup |
| D | On | On | Off | Frame Generation with conventional denoising |
| E | On | On | On | Combined configuration |
RTX 20- and 30-series owners can compare B and C but cannot run D or E with NVIDIA’s original Frame Generation. Record average FPS, consistently measured 1% lows, base-rendered FPS before generated frames, frame-time consistency, latency where suitable tools are available, GPU utilization, CPU limitation and VRAM use. Keep rendered FPS separate from displayed FPS; the latter can include generated frames and is not equivalent to native-rendered performance.
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Try Ray Reconstruction for demanding ray tracing
Enable it in a supported game when you use demanding ray tracing or path tracing and see noisy reflections, unstable shadows or smeared lighting. Compare it in motion at your usual resolution and DLSS mode. Turn it off if that game’s implementation produces too much blur, ghosting or fine-detail loss, or if a measured performance cost matters more than the visual change. Neither a gain nor a performance penalty is universal.
Use Frame Generation when smoothness is the priority
It is most appropriate when base-rendered FPS is already reasonably high and stable, you value smoother displayed motion, and Reflex is available. Test carefully if base FPS is low, the game is CPU-limited, you play a latency-sensitive competitive game, or the display cannot make use of the additional output. Watch for warped particles, ghosting, UI artifacts and poor frame pacing.
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Using both is optional
On supported hardware and in a game that implements both features, you can enable Ray Reconstruction and Frame Generation together. They address different problems: one processes ray-traced lighting, while the other inserts displayed frames. If you see an artifact, disable one feature at a time to identify which stage is responsible.
For RTX 20- and 30-series owners
You can still benefit from Ray Reconstruction in supported games without Frame Generation. DLSS 3.5 is not an RTX 40-only feature; the RTX 40-series restriction applies to NVIDIA’s original DLSS Frame Generation implementation. There is no automatic need to upgrade solely to try Ray Reconstruction.
Keep newer DLSS features out of a 3-versus-3.5 test
NVIDIA’s DLSS ecosystem has continued beyond 3.5. Its current developer page identifies DLSS 4.5 features including Dynamic Multi Frame Generation and 6x Multi Frame Generation. Those newer capabilities are not part of a clean historical DLSS 3-versus-3.5 comparison. NVIDIA’s DLSS developer page documents the later feature set.
When testing on newer hardware, record the exact game and model or DLL version and whether NVIDIA app overrides or driver-level features are active. If the goal is to compare historical feature sets, disable newer overrides and Multi Frame Generation. Otherwise, a test labelled “3.0 versus 3.5” may include newer components.
Game support and DLL caveats
DLSS support must be integrated feature by feature in the game. Manually replacing DLSS files is not a reliable way to add a missing feature: an incompatible version can cause crashes or unsupported behavior, and a newer DLL cannot supply game-engine integration or the motion and ray-tracing data a feature requires. Use the game’s settings and official support information first.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsRay Reconstruction and Frame Generation affect different parts of the image pipeline. Noisy or unstable ray-traced lighting may point to denoising or Ray Reconstruction; warped HUD elements, duplicated objects or malformed particles may point to Frame Generation. Separate A/B tests make those causes easier to distinguish.
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