Nvidia brings updates to RTX on Unreal Engine and Nvidia ACE

Today, NVIDIA has announced new updates for Nvidia ACE and RTX in Unreal Engine. For starters, ACE now supports the open-source small language model, Qwen-B3, enabling developers to deploy AI-powered real-time NPCs on-device within games. On the RTX side, Nvidia has revealed RTX Mega Geometry to further enhance game worlds.

NVIDIA ACE now supports the open-source Qwen3-8B small language model (SLM), enabling developers to deploy dynamic, real-time NPC characters on-device in PC games. The open source Qwen3-8B AI model is now available through NVIDIA ACE as an In-game Inferencing (IGI) SDK plugin, which simplifies the pipeline and optimises AI inference and graphics processing for accelerated game performance.

NVIDIA has also released a set of new updates for the NVIDIA RTX Branch of Unreal Engine (NvRTX), including the Unreal Engine 5.6.1 release, RTX Mega Geometry, and further ReSTIR PT performance and image quality improvements.

The Bonsai Diorama demo accompanies the NvRTX 5.6.1 release and showcases RTX Mega Geometry along with utilising ReSTIR PT and the DLSS 4 Technology suite:

Several improvements have been made to the core IGI SDK including, adding Magpie Flow for real-time, on-device text-to-speech with multilingual support in Spanish and German, introducing MultiLoRA adapters to support fine-tuning model weights quickly with minimal computational overhead, and CUDA in Graphics support for Vulkan backends for optimising graphics and AI workloads. You can download the latest IGI SDK and plugins HERE.

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