Hi @MackyleNaidoo
The human pose estimation models are known to take a toll on the hardware since they require additional decoding and data handling in order to display results.
I assume the Rpi is incapable of decoding the results fast enough.
Here is the handler function: luxonis/depthaiblob/main/depthai_sdk/src/depthai_sdk/nn_models/human-pose-estimation-0001/handler.py
To confirm, try running a different model to see if the FPS improves. If that is the case, your host is just not powerful enough.
Thanks
Jaka