title: Reduce the simulation time of a large scenario
body: <p>I simulated a large scenario (using the whole map of a city) with Omnet-5.0 , Veins-4.5 and SUMO-0.29.0.
  The first scenario simulated took one week.</p>
  
  <p>I need to know the computing time used by Veins comparing it to SUMO and Omnet++. I asked for SUMO, I have a response that SUMO takes 1 second to load the network and 0.3 seconds to run the simulation.</p>
  
  <p>Is there a tool to reduce the simulation time of my scenario please?</p>