This problem is a serious issue for me. Well..no lives depend on it, but still.
Whenever I download an update or a new version of Elite, the launcher takes ages to download it showing download rates between 0.2Mbps and 40Mbps. The Client.log shows many time-outs during this process.
What is crucial though is that while the launcher is downloading (or syncing) the new software, all other clients on my network suffer from internet connection problems. This probably means that my router is being stressed to a point that it fails to properly service any other client than the one the launcher is running on.
This happens only and exclusively when downloading Elite using the Frontier Launcher. So there must be something in the way the launcher communicates with the Frontier servers. I'd love to know what the root cause is, so I can perhaps change a setting or convince my internet provider to do something.