generating creatures on every state change is slow

[clark-lindsay]

Whether or not the current method of deciding if the current parameter set selected by the user is slowing down the app considerably, it is certainly using a lot of resources. Not something that I want to be true about this app.

Possible Solution

instead of calling the generator after every change to state, we could call it only when the user clicks the button, and if their parameters would result in an empty list, then we can render the error message and disable the button until the parameter list changes (maybe a reactive variable looking at the current state of the readSpellParameters store?)