by mklimenko·Rendering
Images © mklimenko. Used for product review; image policy.
Pseudo Rendering Farm stands out for targeting one specific bottleneck: when a frame renders about as fast as Blender can hand it off to the GPU, spawning several instances at once puts otherwise idle hardware to work. The developer is upfront that it isn't a universal fix — for heavy Cycles scenes, a traditional farm like Flamenco may serve better.
To render a frame, Blender prepares the data, sends it to the GPU and triggers the computation. On modern hardware with a simple enough scene, that preparation overhead can match or even exceed the time it takes to produce the frame. Pseudo Rendering Farm tackles this by launching several background Blender instances in parallel. Using frame placeholders and disabling overwrite, each instance claims a frame and works on it independently, at the cost of more system RAM and VRAM.
The extension speeds up both EEVEE and Cycles renders and adds native multi-GPU rendering for EEVEE. On the Vulkan backend, an experimental multi-GPU setup appears when more than one GPU is present, copying your user settings to a temporary folder with a specific GPU selected. A built-in benchmark tests the first 50 frames of a scene to estimate how many instances to run, though you may need to adjust it.
It isn't a one-size-fits-all solution, and works best when render submission overhead is comparable to the cost of a single frame — especially for EEVEE and simpler frames. For heavy Cycles work, a single scene or a lot to process, a regular rendering farm such as Flamenco may fit better.
Pseudo Rendering Farm is best for eEVEE and simpler frames on a single machine, where the render submission overhead is comparable to the cost of rendering an individual frame.
Pseudo Rendering Farm is completely free to download and use.
Pseudo Rendering Farm is compatible with Blender 4.2 LTS and newer, so current 4.x releases are covered. The extension launches parallel background instances of Blender itself, meaning it relies on your existing Blender installation to do the actual rendering rather than any external engine. If you're on a build older than 4.2 LTS, you'd need to update Blender before installing. For the exact minimum version and the latest release details, the developer's GitHub page is the place to check.
Pseudo Rendering Farm can be installed two ways. The first uses Blender's built-in extension system: search for "Pseudo Rendering Farm" in Edit > Preferences > Get Extensions, which also lets you install updates automatically. The second is to download the latest release and add it through Edit > Preferences > Add-ons > Install from Disk, found at the top right of the window. After installation, the main controls appear in the Render panel. Either route ends up with the same add-on enabled and ready to configure.
Pseudo Rendering Farm includes an experimental multi-GPU mode that works with the Vulkan backend. If your system has more than one GPU and you're on Vulkan, a Setup multi-GPU button appears; using it creates a copy of your current user settings in a temporary folder with a specific GPU selected. On unbalanced systems, such as integrated graphics alongside a powerful discrete card, the original approach with Overwrite checked and Placeholders unchecked is still needed so each device can work at its own pace. Adding a second GPU also helps with VRAM limits.
Pseudo Rendering Farm ships with a built-in benchmark that tests the first 50 frames of your scene to estimate a suitable number of parallel instances. Keep in mind those first 50 frames may not fully represent the whole project, so you might need to raise or lower the count manually. Running more instances improves hardware utilization but uses more system RAM and VRAM, so the right number depends on your scene and hardware. As of version 1.1.1, the Overwrite and Placeholders requirements are lifted for systems with one GPU or several identical GPUs.
Pseudo Rendering Farm is listed as free in this catalog and is distributed under the GNU General Public License v3.0 or later. Under GPLv3, if you fork or redistribute the extension you're required to keep the original author attribution in the manifest and source files. The add-on also requests a Files permission, which it uses to manage output files and temporary benchmark data during rendering. For current licensing terms and any changes, check the developer's GitHub page.
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