Does MMDetection use a GPU on Windows?

[SourabhRanade]

I have followed the basic documentation for installing MMDetection as mentioned at: MMDet Installation Page
It is a Windows machine with a 24Gb GPU.

I have managed to start training for one my tasks. My task manager for GPU does not show maximum utilization. However, CPU utilization seems to be high.
I have installed Pytorch with CUDA and the same is also getting recognised by the code. I see my GPU getting identified when the training script starts as well. I also see my MMCV Cuda Compiler as 11.6.
Why does this happen? Can someone point me in the right direction?