Configuring utorrent 3.4.3

Hello, I have updated to windows 10, I am very glad to make this opportunity for free.
but ... I ran into a number of problems ... I coped with some of them, but one problem was not solved, it concerns utorrent 3.4.3
as I did not try to configure it both on the forums and on the advice of the developers, nothing comes of it ...
Let me explain in numbers: earlier there was OS W8.1 with an average download speed of 2.9mb / s. and now on W10 the maximum reaches 200kb / s. it is very scary to see such a figure. When checking the speed of the Internet at the entrance of 20 mb, at the exit of 6 mb.
can anyone encountered such a problem and found a solution, share your thoughts.
ps do not advise rollback, you need to fix the problem.