I tried putting ianaleksander’s code at the beginning of functions.php but couldn’t then login. Wrong module? Wrong place?
I reverted to updating my user profile and this time I was able to uncheck both admin bar options and save changes. No effect on delay times though, still 5+ minutes.
Tried doing some network admin: went to update network, waited ages, said it had completed ok but message wouldn’t disappear from top line.
Tried looking at my sites: dashboard said 15, but when I clicked on my sites, it reckoned I didn’t have any.
So, slow as death and no sites any more. Am I officially dead?