Duo 256M - ISP Tuning, connection issues

Hey everyone!

I’d like to play a bit with ISP tuning and LDC calibration using mentioned tool - PQTools. Unfortunately, I’m facing connection issues while having the board connected via usb-c. As much as I’m able to connect to the board using ssh, and stream the video in VLC using RTSP protocol, connecting through the software doesn’t seem to work for me. I followed the quick start guide found in Sophgo’s documentation, and in a mean time I kept camera-test.sh script running (I’m assuming it does the same stuff as CviIspTool.sh).

What could cause this behaviour?