On Windows 10, a fresh registry install in the central U.S. takes 158 seconds for me on latest nightly using the new package server. Looking at Task Manager, the antivirus program seems to be upset when we’re unpacking all the tiny .toml files (something like 16k files & 4k folders totaling 5 MB on disk).
There’s also a lengthy delay (similar to the ~3 minute delay for registry installation) that seems to be occasionally triggered when performing the first package operation within a given Julia session, even if the registry was just updated in another session. I haven’t managed to isolate the trigger, so it’s not reproducible, but the antivirus is similarly active for the duration of the delay.