FumeFX 7.6 for 3ds Max: Faster Simulation and New NodeWorks Tools

POSTED 11th OF Aug, 2026, Posted by Summer Magdaraog

Sitni Sati has released FumeFX 7.6 for 3ds Max, bringing significant improvements to simulation performance, cache playback, GPU workflows, and NodeWorks ocean and whitewater tools.

The update focuses on a practical production problem: making approved simulations easier to refine without re-running the original sim. Alongside a new Multigrid PCG solver, FumeFX 7.6 introduces Fast Upres and Retimer tools that work directly on cached simulations, plus faster viewport playback and updated VDB export support for Unreal Engine 5.

For 3ds Max artists working with fire, smoke, explosions, fluids, oceans, particles, and procedural effects, this is one of the more workflow-focused FumeFX updates in recent releases.

What Is FumeFX 7.6?

FumeFX 7.6 is the latest version of Sitni Sati’s fluid simulation and multiphysics plugin for Autodesk 3ds Max. It is designed for creating fire, smoke, explosions, gaseous effects, liquids, oceans, foam, bubbles, and particle-based procedural simulations inside 3ds Max.

The 7.6 release adds:

A new Multigrid PCG solver for CPU and GPU simulation
Fast Upres for adding detail to existing caches
Retimer for changing cache playback speed without re-caching
Memory Cache for more interactive playback and scrubbing
Additional GPU simulation feature support
Unreal Engine 5-compatible VDB export
Major NodeWorks ocean, whitewater, and particle workflow improvements

Key Features in FumeFX 7.6

Feature	Production Benefit
Multigrid PCG solver	Faster CPU and GPU simulation
Fast Upres	Add detail to cached simulations without re-simulating
Retimer	Adjust playback speed without generating a new cache
Memory Cache	Keep post-load tools responsive during playback and scrubbing
GPU oxygen burning	Expand GPU simulation functionality
GPU sharpening and Spline Follow	Reduce the need to switch back to CPU workflows
Faster GPU viewport	Improve playback responsiveness in heavy scenes
Unreal Engine 5 VDB export	Simplify volumetric workflows between 3ds Max and UE5
Ocean Dynamics solver	Create more advanced ocean and wake simulations
Dyna Whitewater	Generate foam and bubbles with more control
xShape	Convert particle shapes into editable 3ds Max objects

Faster Simulation With the New Multigrid PCG Solver

The headline performance feature in FumeFX 7.6 is the new Multigrid PCG solver, available for both CPU and GPU simulation.

According to Sitni Sati, the new GPU solver can provide up to 2× faster simulation performance compared to the previous PCG solver, and overall performance can be up to 10× faster than CPU simulation in FumeFX 5.

FumeFX 7.6 also expands GPU simulation support to include:

Oxygen-based burning
Sharpening
Spline Follow

This means artists can keep more of their fire and smoke workflow on the GPU instead of falling back to CPU simulation for specific features.

The older CG solver has been retired as part of this update.

Note: Performance figures are based on Sitni Sati’s reported comparisons and may vary depending on scene complexity, hardware, resolution, and simulation settings.

Fast Upres: Add Detail Without Re-Simulating

One of the most useful additions in FumeFX 7.6 is Fast Upres.

Traditionally, if a cached simulation needed more detail, the artist often had to return to the original simulation and generate a new cache. Fast Upres changes that workflow by allowing additional detail to be added after the cache has already been loaded.

Typical workflow

Before

Simulation → Cache → Need more detail → Re-simulate

With Fast Upres

Simulation → Cache → Fast Upres → Higher-detail result

Fast Upres supports both CPU and GPU processing, making it practical for refining existing shots during look development or final polish.

Retimer: Change Playback Speed Without Re-Caching

FumeFX 7.6 also introduces Retimer, which allows artists to change the playback speed of a cached simulation without generating a new cache.

This is particularly useful when:

An explosion needs to play slightly slower
Smoke should linger longer in a shot
A director requests timing adjustments after the simulation has already been approved

Because the underlying simulation does not need to be rebuilt, timing changes can be evaluated much more quickly.

The Playback rollout now includes live cache retiming, allowing interactive playback-speed adjustments before deciding whether to bake the result.

Memory Cache Keeps Playback Interactive

To support the new post-load workflow, FumeFX 7.6 adds a Memory Cache system that keeps loaded simulation frames in RAM.

This helps keep the following operations responsive during playback and timeline scrubbing:

Fast Upres
Retimer
Sharpening

Sitni Sati also rewrote the cache loading and viewport update system for faster loading and playback performance.

GPU Viewport Improvements

FumeFX 7.6 includes several viewport-related improvements:

Multiple scattering support in the GPU viewport
Improved handling of volumetric display during GPU simulation
Reported 10–20% faster GPU viewport performance

For artists previewing dense smoke or fire simulations directly in the viewport, these changes should improve responsiveness when navigating heavy scenes.

Unreal Engine 5 VDB Export Support

Pipelines that move volumetric simulations between 3ds Max and Unreal Engine 5 receive an important update in FumeFX 7.6.

The VDB export system now supports Unreal Engine 5’s VDB requirements, making it easier to transfer volumetric caches into UE5-based real-time workflows.

Additional VDB workflow improvements include:

Remembering channel assignments when reopening the same cache
A new Assign button for reassigning channels directly from the UI

These changes reduce the amount of repetitive setup required when working with OpenVDB-based pipelines.

NodeWorks 7.6: Major Ocean and Whitewater Upgrade

The largest part of the 7.6 release is the substantial update to NodeWorks.

Rather than being a collection of small utility changes, this update significantly expands ocean simulation, whitewater generation, and particle-driven procedural workflows inside 3ds Max.

New Ocean Dynamics Solver

The previous Wake/Ripple solver has been replaced with a new Ocean Dynamics system that supports:

Kelvin wakes
GPU acceleration
A new 2D Flow Solver
Integration with FumeFX and 3ds Max forces

Ocean Dynamics also adds:

Engine force and direction controls
Export of simulation data to binary files
Support for VRayDisplacementMod-based displacement workflows
Custom velocity fields for particle advection across the ocean surface

This makes NodeWorks considerably more capable for boat wakes, ocean interactions, and large-scale water motion.

Dyna Whitewater and Improved Foam Workflows

FumeFX 7.6 introduces Dyna Whitewater, a new NodeWorks node for generating foam and bubbles from object wakes and 2D Flow simulations.

Unlike the previous workflow, foam and bubbles can now:

Be created from other custom sources
Be influenced directly by NodeWorks forces
Participate in more flexible procedural setups

A new Submerged Decay option improves underwater-to-surface behavior by allowing bubbles to gradually decouple from surface waves and flow as they move deeper, then reconnect with those effects as they rise back toward the surface.

The former Ocean Foam & Spray node has also been renamed Ocean Whitewater for clearer terminology.

Ocean Spectrum Textures and Displacement

NodeWorks now includes:

Ocean Spectrum texture
Ocean Spectra Mix texture

Ocean Spectrum can read NodeWorks spectrum data files and use them for:

Geometry displacement
VRayDisplacementMod vector displacement workflows
Bump mapping

Spectrum parameters can also be exported to a text file and later reloaded into another setup, making it easier to reuse ocean wave configurations across shots or projects.

Significant GPU Performance Gains in NodeWorks

Sitni Sati reports several substantial GPU optimizations for NodeWorks ocean workflows:

More than 2× faster GPU whitewater simulation
More than 3× faster Ocean Spectra tiling and masking
More than 10× faster Ocean Dynamics GPU displacement
More than 2× faster memory-cache performance

NodeWorks also updates its instanced-shape display to use the 3ds Max 2023+ viewport instancing API, improving viewport performance in scenes containing large numbers of instances.

New Particle and Procedural Tools

Beyond ocean simulation, NodeWorks 7.6 adds several useful procedural tools.

xShape

The new xShape object extracts particle shapes from a selected particle group and converts them into a 3ds Max object, making it easier to turn simulation data into renderable or editable geometry.

Additional workflow improvements

NodeWorks also adds:

Transform Matrix input for Object Params
Polygon area output for Object Test
Per-particle variation for Gravity
U and V tiling controls for Extrude and Face Shatter side faces
Layer-aware Regex filtering
Expanded Object Properties selection
Drag-and-drop texmap support from the 3ds Max Material Editor
Floating Gradient Ramp and Color Ramp editors
Custom background colors for Comment nodes

Several nodes have also been optimized so that changing display-only parameters no longer triggers unnecessary simulation restarts.

Stability and Rendering Fixes

FumeFX 7.6 includes a broad set of fixes affecting simulation stability, scripting, viewport display, and rendering.

Notable fixes include:

Random CPU simulation crashes
MAXScript access errors
Issues with Geometry Source animation
Incorrect GPU viewport Blackbody shader display
Oxygen voxel color-grading problems
Cache-path naming issues for Wavelet caches

NodeWorks fixes address:

Ocean Dynamics instability caused by an incorrect inertia matrix
Incorrect foam and bubble depth calculations
Particle-group deletion crashes
Cloth-simulation crashes
Extrude and Vertex Color node issues

ISurf also receives fixes for:

Zhu–Bridson meshing
Use Particle Radius behavior
Arnold rendering with camera motion blur

Who Should Upgrade to FumeFX 7.6?

FumeFX 7.6 is particularly relevant for 3ds Max artists who:

Run large fire or smoke simulations
Frequently retime cached simulations
Need to add detail to existing caches
Work primarily with GPU-based FumeFX workflows
Create oceans, wakes, foam, spray, or whitewater effects
Build particle-driven procedural setups in NodeWorks
Transfer OpenVDB volumetric data into Unreal Engine 5

For many existing users, Fast Upres and Retimer may be the most immediately useful additions because they reduce the need to revisit the original simulation whenever only timing or detail needs to change.

Compatibility

Sitni Sati currently lists FumeFX 7 for Autodesk 3ds Max 2022–2026 on its trial download page.

As with previous FumeFX 7 releases, GPU simulation requires compatible NVIDIA CUDA hardware, while CPU simulation remains available for systems that do not meet the GPU requirements.

FumeFX 7.6: A Workflow-Focused Update

FumeFX 7.6 is best viewed as a workflow and performance release rather than a complete redesign of the FumeFX toolset.

The combination of:

Multigrid PCG
Fast Upres
Retimer
Memory Cache
Expanded GPU feature support
Unreal Engine 5 VDB compatibility

directly addresses common production bottlenecks around simulation iteration and cache management.

At the same time, the extensive NodeWorks ocean and whitewater updates make the release especially important for artists building water, foam, spray, and particle-driven procedural effects inside 3ds Max.

For studios and freelancers already using FumeFX in production, version 7.6 offers meaningful improvements in simulation speed, cache flexibility, GPU workflows, and procedural ocean effects without requiring a major pipeline overhaul.