We have done similar before, and you would also use the Assembler Service as well.https://experienceleague.adobe.com/docs/experience-manager-65/forms/use-document-services/assembler-service.html?lang=en 

Same happens on author (preview)?Suggest you try it on 6.5.13So either upgrade your existing 6.5.6 or create a new local 6.5.13Is the Role drop-down-list items static or dynamic?

G'day! and what Service Pack?In that similar issue you provided, Mayank was able to reproduce on 6.5.10.I have tried with a simple form on 6.5.13 (just on author) and not experiencing any issue.Although if I try to instantiate 100, it does take over 10 seconds to render for me. 

What version of Forms are you on?

That error looks similar to the one in your previous post, where you weren't seeing the empID in stdlog.out Can you provide more detail on what you have done? Are you using the same form, based on template FDMDemo?I cannot see the url on the screenshot of your rendered form. Are you passing empID? A...

https://experienceleague.adobe.com/docs/experience-manager-65/forms/install-aem-forms/osgi-installation/install-configure-document-services.html?lang=en#configuring-the-font-manager-service 

Did you complete the steps on this page ?https://experienceleague.adobe.com/docs/experience-manager-learn/forms/prefill-fdm-db/get-request-parameter.html?lang=enYour form needs to be using this template (FDMDemo).Make sure you uncomment the following lines as mentioned on that page.if(request.getPar...

Then your form is not using the custom template (FDMDemo).See https://experienceleague.adobe.com/docs/experience-manager-learn/forms/prefill-fdm-db/get-request-parameter.html?lang=en I am assuming you did not use the sample form, link on https://experienceleague.adobe.com/docs/experience-manager-lea...

As already mentioned check error.log for errors.It's a little tricky tutorial to follow.Are you seeing the following line in your stdout.logAdobe !!!There is a empID parameter in the request 207

I believe following is the correct way to call your functionlookupReturn = employeeLookup.employeeLookupMain(this.rawValue);Also try changing the following line and see if that has any effect'email': ((xmlDoc.getElementsByTagName("email")[0].childNodes[0]) ? xmlDoc.getElementsByTagName("email")[0].c...