NVIDIA Bonsai Diorama: the demo that showcases DLSS 4, Path Tracing and RTX Mega Geometry in Unreal Engine

La New NVIDIA tech demo, baptized Bonsai Diorama, puts the focus on the Unreal Engine 5.6.1 features and the latest RTX technologies. In a small, very detailed scenario, the company shows how DLSS 4 and Path Tracing can elevate visual fidelity in real time without giving up fluidity.

The proposal comes with improvements in the branch Unreal Engine NvRTX and new developments in the ecosystem of AI applied to gaming, such as NVIDIA ACE and IGI updates. For those who want to tinker, the demo is available from the official website and works on PCs with GeForce RTX GPUs, with special interest for the European community due to its multilingual support.

What does Bonsai Diorama teach?

In essence Bonsai Diorama is a showcase of Unreal Engine 5.6.1 with NVIDIA's RTX extensions. It's not a typical game, but a controlled environment designed to activate and deactivate functions and appreciate their effects on image quality, lighting and performance.

The demo is part of the package. DLSS-4, that combines Super Resolution, Ray Reconstruction and Frame Generation to scale resolution, reconstruct details with AI, and generate extra frames, easing the load on the GPU when the scene gets complicated.

Another pillar is the path tracing, a more ambitious technique than classic ray tracing: Works with multiple light bounces and achieves more coherent and natural lighting, although it requires quite a bit of machine and a good help from rescaling and frame generation.

In geometry, it makes an appearance RTX Mega Geometry, which integrates the Nanite philosophy with the BVH structures of ray tracing. The goal is to handle more detail dynamically and reduce artifacts, keeping the scene stable even with complex cameras or lighting.

The lighting algorithms have also been fine-tuned with ReSTIR PT, a technique designed to sample light efficiently in highly complex scenes, improving the balance between noise, sharpness and computational cost.

Requirements, download and controls

To run the demo you need drivers 581.29 or higher and, as a starting point, a GeForce RTX 2080 Ti. It's no small load: Path tracing and dense geometry raise the bar for required hardware.

Strikingly, NVIDIA indicates as recommended a RTX 5060. While its raw power might not surpass previous high-end GPUs, its compatibility with DLSS 4 and Frame Generation allows you to multiply the FPS of the scene, smoothing the experience at current resolutions.

The download is available from the NVIDIA page. Once inside, You can press the “H” key to open the interface and activate or adjust each technology at will., making it easier to understand the impact of each setting on quality and performance.

For users in Spain and the rest of Europe with a PC equipped with GPU RTX, the demo is a good touchstone for Check how the latest features perform on your own computer and what room for improvement AI optimizations bring.

NvRTX 5.6.1, ACE and IGI: What's New

The branch NvRTX 5.6.1 Unreal Engine adds RTX Mega Geometry support and ReSTIR PT improvements, accompanying the release of Bonsai Diorama as a visual demonstrator. In parallel, NVIDIA has updated its gaming AI stack with News in ACE and the In-Game Inference (IGI) SDK.

• ACE + Qwen3-8B: Integration of open source SLM as an IGI plugin for Dynamic NPCs that reason and respond in real time, on the device itself and without dependence on the cloud.
• Magpie Flow TTS: Real-time text-to-speech with multilingual support, including Spanish and German, which is practical for Europe.
• MultiLoRA: adapters to fit models with a minimum computational load, facilitating rapid iterations in production.
• CUDA for Vulkan: efficiency improvements by combining graphics loads and inference, with lower latencies on PCs with RTX GPUs.

The set aims to enable European and Spanish-speaking developers to create more reactive and natural experiences, thanks to local inferences that reduce latency and avoid connectivity bottlenecks, while maintaining the visual advancements of ray tracing.

With Bonsai Diorama, NVIDIA and Epic show a state-of-the-art photography: DLSS 4 for sustained performance, Path Tracing and ReSTIR PT for more believable lighting, and RTX Mega Geometry for a boost in geometric detail—all supported by improvements to ACE and IGI that pave the way for more vibrant PC gaming.