Nnvidconv poor performance after upgrade from jp4.3 to jp4.4

Please get supported formats of the camera by running:

$ v4l2-ctl -d /dev/video1 --list-formats-ext

And check if the source can reach 30fps by running:

gst-launch-1.0 v4l2src device=/dev/video1 ! ‘video/x-raw,format=UYVY,width=_WIDTH_,height=_HEIGHT_,frametate=30/1’ ! fpsdisplaysink text-overlay=0 video-sink=fakesink sync=0 -v

We have steps of launching USB cameras(or YUV sensors through v4l2):
Jetson Nano FAQ
Q: I have a USB camera. How can I launch it on Jetson Nano?