Optimizing server list definitions
The speed with which server lists are calculated and recalculated is affected by the complexity of the list's structure.
In the List Designer, the two primary ways of defining the structure
of a list are structure selection and filters. If possible, use structure
selection instead of filters.
Note: Structure selection is always a more efficient way than filters
to reduce the elements in a list.
You can also use the Advanced pane of the List Designer to optimize lists.