I should probably start a new thread for this but it seemed appropriate to post here at this time of nght..
So the OPi Zero Plus 2 boards arrived and I duly set up the image on a 8GB SD card, connected the serial TTL to USB adapter and booted. Everything came up fine so I set up the wifi to my local network using nmtui. Again no problems. I did an apt-get update and upgrade and rebooted, all OK again. Having SSHed into the device I get very sluggish performance and pinging from anot