Static objects - Lagg ???

[1para{god-father} 105]

If I place a lot of Static Object down on the map , say 3-4 FOB that are very BIG indeed, will this have an big impact of speed of a hosted server , and cause Lag ?

I ask because i have a mission and it words great when i test but when i try on a hosted server I get so much lag - so trying to work out if it is all the object i have placed ? the mission.sqm is just over 1.2mb