I don't really know how it can't be related somehow to Windows, seeing as how I can download 43 years worth of content on 3 different Android devices in under 5 minutes each. With this Windows version, I can do about 6 months at a time, which costs ~45 seconds per block. Add to that the time to move from one group to the next, and it gets quite time-consuming.
I don't pretend to have any answers or even suggestions as to why there is a difference, let alone any possible resolutions. I'm just pointing out that there is a difference. Hopefully, a resolution will come about. If not, it is what it is.
I did not misunderstand what you wrote in your first response -- I know you are working hard to make this and other apps the best they can possibly be, which is only to our benefit.
Again, thank you for all your hard work!
CIAO!
Ed Nielsen