I'm also experiencing super slow speeds. I've noticed I have to keep pausing and resuming the download in the manager to revitalize the download. I'm watching my network speeds on and off during these big downloads and they do genuinely just drop off after 15-20 min, then I get spike in the graph when I hit pause and resume in the software manager. I'm in an apt, wired connection, desktop, windows 10, 16gigs ram. Other downloads and streams have processed quite quickly along side the IK ones today. Honestly, if a lot IK's network throughput is around users trying to get their sampletank sounds then I could imagine that it's a lot of load. As a new sampletank user I'm looking at almost 40 gigs of downloads now.. multiply that by however many thousand customers there are.. that's a lot of heavy traffic. That kind of bandwidth must be hard on the budget too.
I hope things improve though, this is a lot of babysitting. On a side note, I'm loving the retro synths in HitMaker.. thank you