I'm using the network analyst tool in arcpy to take breadcrumb trails and approximate routes using a network dataset. I'm wondering why the process of loading the stops into Network Analyst takes so long. The input data can include up to 10,000 points, which are only loading at about 15-20 stops/second. Every other step of the process (pre-processing, building network dataset, solving for routes) is relatively fast. Does anyone have any idea how I could improve performance?