Different speed of two or more rtsp streams, low frame rate

There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks

If there is heavy packet lost. You may consult the camera vendor whether the camera support TCP connection. It is better to use TCP connection than UDP.

You can also set longer receiver latency to get more smooth streams. rtspsrc (gstreamer.freedesktop.org)

From DeepStream side, what you can do to to set correct nvstreammux parameters to try to sync the streams. DeepStream SDK FAQ - Intelligent Video Analytics / DeepStream SDK - NVIDIA Developer Forums