I think there have been reports since day one of this happening to a lot of people and using external HDDs, I think it’s a software issue. Hopefully anyway. As it should allow Sony to iron it out. Wonder why it’s taking them so long though..A quick read on google and there seems to be a fair amount of issues with PS5 and external drives connected to rear USB ports. A few mention speed differences too.
It’s working now as it should so will leave it alone and look into a swap when they are more readily available if it’s a fault it could be a software bug from what I have been reading...
- edit. I haven’t personally had any issue. But then again I’m not using any external hard drive. The only thing plugged into my console is the usb dongle for my headset (usb C on the front)