An intersection algorithm that is performed at the start of a simulation to connect each side of a GGI connection incurs a one-time cost.

Each GGI connection means approximately 5% more CPU time and memory is required. This number can vary greatly, as it is a function of the number of nodes involved in a GGI connection, compared to the number of nodes that are not involved in the GGI connection. There is also a dependence on the geometric complexity of the GGI connection.