You can optimize the runtime of PDF form processing if you consider performance aspects when developing PDF online forms and creating form templates for PDF output forms.
Recommendations for Adobe LiveCycle Designer
For interactive forms, use the Form Caching function.
Minimize the amount of communication that takes place with the server in interactive forms. Only use those interactive functions (such as dynamic value help that sends queries to the server) that are strictly necessary.
Keep scripting to a minimum, since scripting in a form can have an effect on performance.
Use the following fonts where possible:
Times New Roman
This improves performance because the fonts do not have to be embedded in the form.
More information: Online Help for Adobe LiveCycle Designer
Recommendations for Form Builder
For each business scenario, design an individual form that uses its own data retrieval methods. Do not implement the condition-driven output of multiple forms from the same form object.
Structure the form context in accordance with the logical flow of data. Place the context nodes used at the top of the form at the initial position in the context tree.
Deactivate any context nodes that you do not need.
More information: Organizing the Structure of the Form Context
Recommendations for Calling Forms and Form Output
Cache form templates for processing.
More information: Caching Forms
Unless accessibility requirements apply, avoid using tags in forms.
More information: parameter PDFTAGGED in Form Interface Parameters of the Application
When you create forms for mass printing, restrict the data retrieval process in the application program and interface to the required data fields.
More information: Determining the Interface Fields Used in the Application Program
Bundle form templates for processing.
parameter BUMODE in Form Interface Parameters of the Application
Reduce the runtime of large print requests by using parallel processing.
More information: Reducing Runtime of Print Requests by Parallel Processing