Mortar Trap

Can anyone help me figure out how to edit the projectile coming out of mortar trap? Not the one that falls out of the sky, the one it shoots upward into the sky.

I simply want to make the falling projectile a bit faster to improve it’s accuracy, but doing so makes it fall into the screen before the one going upward leaves the screen, and looks terrible.

Is it even a projectile, or is it an animation?

Would be super helpful to have mortar trap shoot it’s initial upward projectile at a faster projectile speed.