Thank you for the answers.
It is a problem for us, because we have a multi customer SCCM installation. And everytime when a new customer MP/DP is installed, this system will be added at the first position of the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SMS\DP
"ManagementPoints" (REG_SZ)
This causes problems because policy retrieval for PXE booting clients runs fast on the new installed customer location, and runs even slower on all other locations.
Instead of spending hours in a Microsoft call (and porbably won't get any solution), we implemented configuration items and GPOs at some locations that puts the MP/DPs in this regsitry key in the correct order.