Hi,
Please try:
$ sudo jetson_clocks
$ gst-launch-1.0 v4l2src ! 'video/x-raw,width=1920,height=1080,framerate=30/1,format=YUY2' ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! fpsdisplaysink text-overlay=0 video-sink=nv3dsink sync=0 -v
We can achieve 1080p30 on Orin developer kit + AvmerMedia CAM513. Please check if you can achieve target frame rate in running the command.