In long, complex templates, you may find a bit of a lag in moving from question to question in the interview. This is usually because as you move from one answer field to the next, HotDocs is updating the entire interview (in other words, it's processing every dialog and every script to update the interview and assembled document based on answers provided).
If you want to speed up the interview, you can turn off the "Instant Update" feature by clicking on the corresponding button on the toolbar in the interview window. This will cause HotDocs to update the entire interview only when moving from dialog to dialog, rather than from each answer field to the next (the current dialog script will continue to be processed while moving within the dialog). You may still encounter a lag between dialogs, but overall interview navigation should speed up as a result.