Incidentally, I think Amicable numbers is guilty of overestimating the time tasks will take, certainly on their multi-CPU tasks where it looks to me like the estimate is for if the task is running on just on processor rather than the six I am using.

See https://github.com/BOINC/boinc/issues/4151 and subsequent links. Should be fixed in server release v1.4.2 (we went through through some heavy testing on LHC-dev on CPDN's behalf, but I'm not trawling through all the entrails). But if they don't update their server, it'll go on happening.

Many projects (I think Primegrid and Einstein are two guilty parties) say updating the server is a huge deal, since they've tweaked to suit themselves and those tweaks would be obliterated and they'd have a lot of work to do to reinstate them. Boinc was too late putting in a lot of things, and projects have had to make their own versions. Now we have branches and more mess.

Many projects (I think Primegrid and Einstein are two guilty parties) say updating the server is a huge deal, since they've tweaked to suit themselves and those tweaks would be obliterated and they'd have a lot of work to do to reinstate them. Boinc was too late putting in a lot of things, and projects have had to make their own versions. Now we have branches and more mess.

You can add World Community Grid to that list. Though it looks as if Amicable numbers now recognises I am letting it use six cores/task.