Particle effect attached to projectile is affecting overlap events

Hello,

I currently have a basic system for my AI character to check for overlap events and if it is overlapped by a projectile it simply takes damage.

For some reason the particle effect attached to the projectile is messing with the overlap events. It appears that the projectile may be overlapping the particle effect from the previous projectile.

If I remove the particle effect or just turn auto activate off everything is perfect. As soon as I turn it back on it goes back to not showing all projectiles as overlapping.

Can anyone provide some advice on what may be causing this and how I can control it?