RealityCapture requires:
64bit machine with at least 8GB of RAM
64bit Microsoft Windows version 8 / 8.1 / 10 / 11 or Windows Server version 2008+
NVIDIA graphics card at least 1GB VRAM and CUDA 3.0+…
https://dev.epicgames.com/community/learning/knowledge-base/Wj7B/capturing-reality-realitycapture-os-and-hardware-requirements