I'd just noticed copying the driver packs took some time and thought: less copying => less time and I got inspired by (or carried away with) jaws1975's [Add-on] Select desired DriverPacks during M2 install or after install.
In this case, you might be interested in jaws1975's faster version of un7zip.exe.
Might save some time for you, best to see for yourself.
Also, if you use all of the 3rd party DriverPack, you may want to do away with some that you really don't need.
The printer packs aeach are very huge and take the greatest share of copying/extracting time on my systems it seems.
If you do not need them (they only support certain printers anyway, are no use for network printers and require all devices to be connected and switched on during installation) or value speed more than complete driver support, removing them from the 3rd party DriverPack sub-folder is a great idea.
You could always supply peripheral device drivers through a driver's only disc that you execute some point after setup - this is already possible with what BASE supplies so you wouldn't have to seek long for such a solution (please do use search on this forum, however ).