Unable to use GPU while running Isaac SDK application on Jetson AGX (CPU Maxxed out)

The CPU usage while running an Isaac application on a robot using Jetson Xavier AGX is really high on occasions which freezes the Xavier momentarily. Are there any configurations that forces the Isaac application uses the GPU as well?
My current system specifications

Board type: Jetson Xavier AGX
Jetpack: 4.4.1
CUDA: 10.2.89

Does an isaac application use GPU in run time on a Jetson Xavier AGX?
jtop stats shows the GPU usage to be zero consistently. Does having a powerful platform like Xavier AGX provide any performance enhancement in navigation applications?

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