Perhaps your internet provider is slow? Or maybe they meter your speeds during peak demand times or after you hit a data limit for the month, etc. I downloaded the update the other day (500Mb) and got 5-6 Mb/sec. i.e. less than a minute for the file. Never had much trouble with Steinberg downloads. Usually pretty fast. Cubase 10 full installer (~11GB) took 10-15 minutes last time and Halion 6 (~30GB) about an hour.