With no reason, i mean i didn’t change anything in my computer or network, i nearly can’t upload a file to MyBookLive 44,5 kb per second. A 15mb file takes 10 minutes to download. Streaming a movie to my computer or television is working fine, no problem at all. Downloading from MBL is working…

Problem is solved, it was a hardware failure. The switch is used was the problem, i tried a new switch and the performance was back to normal again! Thanks for the help TonyPh12345!