Getting the physics substepping tick without UPrimitiveComponent?

Im in a particular position where i need to run a trajectory simulation -without- using UPrimitiveComponent (AddCustomPhysics). Its all working nicely in a scene component just need to transition from using TickComponent() to some sort of physics tick. But it seems thats only exposed to UPrimitiveComponent. Each projectile is only a struct with info about where it is, how fast its moving, and if its hitting anything. Again, im not using rigidbodies at all.

Thanks, this has been bothering me

What do you want to achieve?