Very poor transfer speeds from rsync.percona.com

The company I work for mirrors the percona repos from rsync.percona.com to our own internal repo servers. When manually setting up new mirrors for the percona 8 repos I noticed that the transfer speeds are really poor. When cloning from rsync.percona.com I see speeds of 10-20kB/s, this has been tested from a few different networks with the same results.

Is this the speed that can be expected, or is there some issue with the rsync server?

Downloading via https from repo.percona.com gives decent speeds (5+ MB/s)

We implemented some fixes in the past year. Let us know if problem persist. Also because repo.percona.com can be served by different hosts it would be helpful to know to what IP repo.percona.com resolved for you at the time of poor performance.