Simulation time problem after adding many spatial contact forces blocks

In my simulink model, the more I add spatial contact force blocks the more slower the simulation gets. It gets too slow that it is not able to simulate. For less number of spatial contact force blocks, the simulation is working fine but as i go on increasing the components so spatial contact force blocks increases then this problem is arising. What can be done to solve this problem?

[Bahador Beigomi]

I have the same issue even with only one pair of contact bodies and I don't know what should I do!

[Eleftherios Kantounias]

You might consider using an explicit solver for your simulation. While this may result in longer simulation times, it will ensure that the simulation is completed successfully.