Maximun number of objects in a lane/maximum length of a lanr

Hi,

   I have a requirement to create a process map using bpmn 2.0, which is pretty large and has around 700 steps/objects to go into a single model. I have a constraint not to use subprocesses or split and  knit processes together by an vacd. 

   So when trying to create a single map with 700 objects, ARIS 10 wouldn't allow me to cross morebthan 150 objects and my lanes and pools are getting freezed.

   Can someone help me know, if there are any constraint over the number of ibjects/lanr length in ARIS10.

   Appreciate ur help

- Subash