JavaScript start-up API (ABAP Backend) response is slow

Hi experts,

I dont know if it is the adequate place here, but I'd like to try...

For accessing user information from the SAP Backend the ABAP UI Addon provides a JavaScript start-up API. Using this API, a SAPUI5 Applikation deployed on the ABAP server can read several information about the backend user.

The good point is: It works! :-)

But the very first call of the JavaScript start-up API takes about 40 seconds until a response returns. Other server responses (e.g. the SAPUI5 application itself) are returned pretty fast, so I dont guess it is an infrastructure problem.

Does anybody made similar experiences? What might be a reason for that?

Regards

Stefan