Abnormally low FPS on dual RTX PRO 6000 Blackwell workstation across Isaac Sim 4.5.0, 5.0.0, and 5.1.0

System information:

  • OS: Ubuntu 22.04.5 LTS

  • Kernel: 5.15.0-171-generic

  • CPU: 2 x Intel Xeon CPU Max 9480

  • CPU total: 224 logical CPUs

  • RAM: 1.0 TiB

  • GPU 0: NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition, about 96 GB VRAM

  • GPU 1: NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition, about 96 GB VRAM

  • NVIDIA driver: 590.48.01

  • CUDA reported by nvidia-smi: 13.1

  • Display session: X11, DISPLAY=:1

  • Monitor: 1920x1080 at 119.98 Hz

Isaac Sim versions tested:

  • isaacsim 4.5.0, 5.0.0. 5.1.0

Behavior:
Viewport FPS is abnormally low on this machine, and the same symptom is present in Isaac Sim 4.5.0, 5.0.0, and 5.1.0. Our lab purchased this high-performance workstation based on NVIDIA’s hardware recommendations because we need to simulate complex scenes involving deformable bodies, particle systems, and robotics. However, even a very simple scene with a single cube dropping onto the ground runs at only about 24 FPS. On our actual workload, performance sometimes drops to around 0.15 FPS, with frame times exceeding 1000 ms. I also searched for similar reports online and noticed that many of the low-FPS cases appear to involve Intel Xeon CPUs. Could the Xeon platform be a contributing factor? Thank you in advance for your assistance.