Issue:
There is a bug where projectiles related to fire are not visible
I found out that this is a frame rate issue.
You have to set at least 80 frames to see the projectiles, and if you set the frame rate higher than that, the projectiles are not visible.
Trigger Event:
90+ frames (90 frames the projectile is visible but disappears or stops intermittently, the problem gets worse at frames above that and is not visible at 144.)