After the laser is turned off, the simulation should run a little longer until all cells solidify. Adding a feature that stops the simulation once all cells are solidified (should be an easy check to implement, if max(liquid metal cell field) < some tolerance ) stop the simulation) will probably save some time in most cases.
This could help not having to run the simulation for some extra arbitrary time to wait for the cells to solidify, instead, it will automatically stop it once everything is solidified.
@cosicp