How fast can you download store content?

I have a 500mbps download connection, but reinstalling msfs on another disk takes literally days, download speed from 0.5 to 8 mbps. Moreover it kills the general download speed of my connection. Testing with speeddisk gives the same very slow downloads. Not onliy during the fs download but also after ik stop downloading, stop the sym and do another speeddisk test. Rebooting the system gives the right speed again. That is, until I start the sym. The snailspeed allover. It looks like starting an msfs download switches a knob in the system to pre historic speedsettings.

I wonder if there is a fs setting that controls the downloadspeed, Since I cannot get into any fs settings page until the installation/download is complete I down’t know a way to check that and possibly correct that.

Thanks fo reading