Ahh.. I am loving the progress 
... and you can tell how big structure is, because of slowness.
Well, that's probably because after fracturing some of the fragments finish bellow the ground plane, or their speed is so high, that in one frame they are above, and in the second, they are way bellow so ground can "detect them".
Usually, a solution is to change steps in TyFlow Icon to 1/2, or 1/4, or even lower (so it will calculate between frames)... but that will make the whole simulation slower.
I usually don't bother with that, and I just create a huge BOX, and I name it KillBox, and I place it little bellow ground plane.
Then I add operator surface test, and I set it to "volume inside", and I link it to another event with delete operator, so I basically delete any particle that find itself inside the huge box bellow ground.
... and you can tell how big structure is, because of slowness. Well, that's probably because after fracturing some of the fragments finish bellow the ground plane, or their speed is so high, that in one frame they are above, and in the second, they are way bellow so ground can "detect them".
Usually, a solution is to change steps in TyFlow Icon to 1/2, or 1/4, or even lower (so it will calculate between frames)... but that will make the whole simulation slower.
I usually don't bother with that, and I just create a huge BOX, and I name it KillBox, and I place it little bellow ground plane.
Then I add operator surface test, and I set it to "volume inside", and I link it to another event with delete operator, so I basically delete any particle that find itself inside the huge box bellow ground.