Speed up form load time at run-time

I am using code to load windows... the problem is that the crystal report windows take forever to load at run time...

Example of a form load:

     Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        If Lookup_Account_Form Is Nothing Then
            Lookup_Account_Form = New Lookup_Account
            Lookup_Account_Form.Show()
        End If
        Me.Hide()
        Primary_Screen_Form = Nothing
    End Sub

Example of that form returning back:

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If Primary_Screen_Form Is Nothing Then
            Primary_Screen_Form = New Primary_Screen
            Primary_Screen_Form.Show()
        End If
        Me.Hide()
        Lookup_Account_Form = Nothing
    End Sub

Any ideas on how to fix this issue... load at program start?  Load forms into memory?  Other ways to do what I have done here?

Thanks,
John