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

[hangongchen]

Description

Hi Nvidia team,

This is a follow up from post #578 (comment).

We have reinstalled GPU driver to 580.95.05. Unfortunately the low FPS issue still shows up and there isn't any difference.
By the way, the isaacsim is installed in a conda env.

Isaac Sim version

5.1.0

Operating System (OS)

Ubuntu 22.04

GPU Name

RTX PRO 6000 *2

GPU Driver and CUDA versions

580.95.05

Logs

No response

Additional information

No response

[hangongchen]

By simply starting the simulation, the FPS drop to roughly 25.

[ssulkunte-nv]

Hi @hangongchen. Here's a few debugging steps to take:

1. What CPU do you have? If it's on the slower side, can you try to set the CPU governors to a faster mode (i.e. performance mode)? Docs
2. Try launching Isaac Sim with --reset-user to confirm that there are no persistent settings that may have been applied previously causing slower rendering
3. Run a benchmark from the docs and share the metric output here. This can help confirm whether a more GPU-intensive workflow runs as expected (rather than an empty scene). Specifically, I'd recommend to run the Workflow Performance / ROS 2 Render & Publishing Speed benchmark.
4. If still seeing abnormal performance, capture a trace of the slowdown (~10 seconds worth) using the Tracy profiler and share here. That can help identify what specifically on this system seems to be causing the slowdown. Docs here