i see chats by 2 people there.
ddosing would be sending so many more, you wouldnt even be seeing the chats lol.
that actually looks a little light for internet use. usually 10s thousands of packets are sent a minute.
if i had to guess what the lag is, its that you are perhaps not having blockland as window's active window. and the memory is being tossed around and realocated badly. so stop minimizing to read websites and stay on the game. if you are hosting, why have the users on your server put up with that.