Setup editor takes 5 minutes to read settings (1 reply)

Hello to you all,

My setup editors (WD20, WD21,WD22) all take minutes to load tthe settings of a setup.
When I see the files etc. then I have to select the right setup and wait another 5 minutes.

There is no disk IO, almost no memory usage and no processor time used bij the setup editor.
Then I want to generate the install files. Also takes minutes

Anybody any idea?
TIA