dosbox multiplayer running to slow

[dudu]

hi,

i whas trying to playing a dos game (jurassic war)
online to a friend but the game is running very slow
when i run the game in single mode the game is running fast

i run the game whit dosbox
host :serial1=nullmodem
client:serieal1=nullmodem server: <ip>
and we connected whit hamachi
without hamachi it do not succeeds

maybe somting in the dosbox conf?

i change the cycles
and try ctrl F12 for speed

but this dont work

here info of the game
http://www.mobygames.com/game/dos/jurassic-war/techinfo

someone ideas?

thanks