Hello there,
keep in mind that once a projectile overlaps another projectile it will send an impulse to the other projectile,
In your collision component you can set it to “initially” ignore and “afterwards” set it back to blocking:
http://imageupper.com/s02/1/6/R1398620059642153_1.png
The important bit is that the object type is set to *projectile *and collision response to ignore.
So that should prevent the projectiles from affecting one another when they spawn.
If you’d want your projectiles to interact with each other there are many ways to go about doing that,
but to keep it simple you can use a Timer or calculate time in the Tick event, like so: