Kentico Personas Update time Delay

We are using Kentico inbuilt personas for one of our web sites and we are experiencing about five seconds delay when updating personas. We have some contact fields and we use rules to set personas. Is there any way to improve the persona's update time. We use the following code snippet to update the contact:int contactId = ModuleCommands.OnlineMarketingGetCurrentContactID(); Dictionary@string, object@ contactData = new Dictionary@string, object@(); contactData.Add("key", "Test"); ModuleCommands.OnlineMarketingUpdateContactFromExternalSource(contactData, true, contactId);