Flight Simulator installation very slow?

Today I got Microsoft Flight Simulator 2020 via Xbox Game Pass. I started the game and now here I'm. After over 1 hour I only have 2 of 135 GB. I have very good internet, it doesn't matter.

Thanks in advance

Are you installing the files on an SSD? Depending on what kind of files these are, it could be that your hard drive is limiting you.

Even an old HDD manages at least 36 GB per hour…

100MB / s, you're pretty optimistic.

Yes, I had calculated it very pessimistically with a lot of small files it can drop to 10 MB / s with an HDD… 😂👍