I created a testcase to reproduce the problem.

Is quite huge because I copied it from my real world.

Please provide me a way to send You the code.

Not all the code is needed but if I can’t clean up the unneeded parts.

The examples shows that the page buid up time is quite long (6 seconds) and it depends entierely from a large dropdown list.

Please suggest a solution to improve significantely the response time.