I’d look at the geometry cache before looking at the filed.
Is its collision working? Does shooting a projectile at it cause it to break as you’d expect?
Next thing I’d do is change the field from on tick to a custom event - enable bluetility on it, and try to toggle it manually.
That way, in theory, the field won’t run before everything is loaded and in place (by the time you get to the button).
After that…
Well, you ought to manually do a sphere trace of where the sphere was with the values you pass into the field, because you never know. Something may be off with it.
If all that checks out. Debug the rest. The falloff radius. The magnitude value(s) etc.
Becauase you have it running on tick right now with a .5 delay, the forces could just be summing up until they get to the treshold where the item breaks.