Quick uestion about ledge falling away as you walk over it fracture only works when ...

Just something interesting I notice fracturing a ledge mesh when you walk over it works only when I run my
laptop on a battery and when I plug AC power in the fracture doesn’t happen.
Just curious … why would this be.
Is it something to do with the game engine running not at full specs when it senses your laptop is
on battery mode.
Not unhappy or anything I will fix this at some point I just find it interesting …
Any thoughts?