blazengun

Please help :)

The server is the tekkit one supplied on their website.

Hi, I am trying to host a server using my computer using Hamachi; I have 16gb ram, 96mb/s dl speed, 84mb/s upload for internet (university internet; could this be a problem?) I hosted a server and can connect to it myself using hamachi, and everything is fine. But when friends connect, they have issues like blocks not being destroyed, not being able to pick up, and when i look at them they are stationary at one place, even though for them they are moving around. The server only works properly for me. I am very new to this whole thing sorry, thank you in advance for any help at all.