About Lag and Lava

So basically we in hardcore faction experiencing spike of lag and i know the whole server has the lag .. so because of this lots of people are losing stuff , got mid air death and one the most annoying thing is the lava isnt draining when u are making walls which it took hours and hours to fix .. so i am asking a mod who can fix it coz we cant fly in to make this thing fix easier specially when our walls are all the way up to sky limit .. please please we need help .. we dont wanna get raid with our walls un protected ...

even water got messed up ..

so no one can ever help us about it? we are experiencing the problem again .. FOR FUCK SAKE game!!!!