[tex-live] Is the TeX Live 2018 installer (for Windows) considerably slower than previous years

[Philip Taylor]

On an Intel I7 machine with 16Gb RAM, the 2018 Tex Live installer, installing from a local Rsynch'ed repository, is less than 1/3 of the way through ("Installing elvish") after an hour and a quarter (1H15); this seems very much slower than I have experienced in the past with earlier TeX Live installers.  Is this to be expected, and if so, what is the cause please ?
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Philip Taylor