Hi Earth,
Obviously there is not alot we can do about your ISP connection speeds but there are a few things to keep in mind when using WinMX that might help you.
If I knew a bit more about your set up it would greatly help me to tell you some of them.
Exactly what connection is it that is so slow, downloads, connecting to the network itself, uploads?
What version of WinMX are you using?
What is your internet connection?
Are you primary or secondary connection to WinMX?
In the mean time if you would like to have a look at this link:
https://www.winmxworld.com/scripts/bandwidth/This is a link that will test your bandwidth and then help you to make adjustments to WinMX.
Let me know the answers to the above questions so that we can go over some settings that might help you. As always computers require lots of love and patients ..
.. and a hammer just as a threat..