Multiple Vehicles cause frame rate to drop drastically.

[MrPuff]

When I add multiple vehicles to the game using the btVehicle class the frame rate halves.

Is there a way I can reduce the tick of the vehicles?

At the moment im just stepping the game at it's defult settings:

void BulletPhysics::Update(float dt)
{
m_dynamicsWorld->stepSimulation(dt * 0.001f);
}

[MrPuff]

Apologies I should provide more information about the problem in my posts.

The problem turned out to be that I was using convex hull shapes with too many polygons, after simplifying them I no longer have any speed issues with multiple raycast vehicles.