Hi, It seems the issue wasn't with the hardware or the connection. I use mutt and it's the program that was slowing everything down, and that was down to me using new mutt with my old config. The whole pause for 5 seconds thing was due to it scanning gigabytes of email each time it woke up. The fix was to review the config and change a couple of settings. Now there's no delay (well there is a bit but only because it's scanning the folders it's told to for new mail). But looking at a hardware cause wasn't in vain. On the way to the solution, found a few tips through here that sped up the system generally, and learned a bit. So now I have a *really quick* raspberry pi4 which is rock-solid stable, so thanks :D -- J.
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