I have a USB hub attached to a USB 3 port, with nothing attached to the hub. The HDMI cable is plugged from the Orange Pi 5’s HDMI port directly to the HDMI port of the monitor. I am not using the USB-C at all. I have the 8 GiB model.
I have the ethernet cable attached. No issue with networking. I am also booting from the NVME, no issues.
I don’t have another HDMI screen, so I can’t test that option. I tried another cable, same result. I also unplugged the USB hub, same result.