How to improve the form performance ?

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C#

DevExpress

hi,
i use DevExpress form with name "Details" , it very slow during loading the interface. it have around 20 sec between last code in

public Details() {
}

and the first line

private void Details_Load(object sender, EventArgs e){
}

What I have tried:

i tried to use breakpoints but no events fired between

public Details() {
}

private void Details_Load(object sender, EventArgs e){
}