DanielZenx's post in unreliable connection kick problem was marked as the answer
If none of that worked, it might just mean that your network actually is too bad to play TMP.
Sorry, forgot to mention a thing that works for me. You should try going into SP then moving to a place with little to no people, then try to load in. Loading into a place with a lot of people with bad wifi will trigger the unreliable kick.