How to make particles display forever

I’m using a particle system that produces chunks & chips of material when a static mesh is hit. I noticed that the chunks/chips disappear shortly after they hit the ground. I’d like them to remain on the ground indefinitely.

I went into the particle system and set the Lifetime duration to 10,000 seconds and infinite looping (setting the number of loops to 0). But that doesn’t seem to make a difference. It looks like the Engine has it so that when the particle stops moving it deletes itself and no longer respects the lifetime module. I’m led to believe that older versions of the Engine (before 4.14) may have not behaved this way. So, I’m not sure if this behavior is an intended change or bug.

Bottom line: Is there a way to make particles NOT delete themselves? If so, please enlighten me.

Thanks.