OK, so you were right because I made a little mistake for x64 "Tools" downloads, I will update WinReducer 8.1 tomorrow with v1.31 and with the new WinReducer Updates catalog v2014.12 ...
No, they are directly download from their owners website ! I also experienced some slow down sometimes ...
EDIT : Are you talking about downloading WinReducer Software, because I answered you about the download location of all Windows Updates and Tools (available using the WinReducer Updates Catalog) ?
no i meant the winreducer software that can be downloaded from the main page. i tried it 2 hours ago at university and everything was ok
tried it now at home and speed drops from 60kb/s to 20kb/s and went up to 30kb/s and so on. trying to download something other (i.e. open office) and download speed is 712kb/s +- 20kb/s till the download finishes