Hi,

Usually on first load, you will have to go through Windows STS for authentication, but once you have logged in, the claims token should be cached so your form should load pretty quickly without going through Windows STS again.

If that first loading time is too slow for you, you can try going to IIS, select your Runtime site, and change IIS authentication from Forms to Windows. That will totally skip Windows STS for authentication, and use Integrated Windows instead. However, please note that if you are using smartforms with SharePoint, you have no other choice but to stick with Windows STS, as SharePoint uses claims for authentication as well.

I've switched the authentication method form Windows to Form authentication - it works mutch faster now.

Kind regards,

arnam