Need to set Advanced Options in script runtime

If I change the code like this (below), only the first run needs the Sleep(1000), others don’t need it and update just fine.

And yes, I need this to run on for many users on different machines, so needs to be bullet-proof.

    import Rhino
    import rhinoscriptsyntax as rs

    def setdegradation(level,sleep):
        settings = Rhino.PlugIns.PlugIn.GetPluginSettings(Rhino.RhinoApp.CurrentRhinoId, False)
        s = settings.GetChild("Options").GetChild("OpenGL")
        s.SetInteger("SkylightShadowResolutionScale", level)
        Rhino.PlugIns.PlugIn.SavePluginSettings( Rhino.RhinoApp.CurrentRhinoId)
        if sleep:
            rs.Sleep(1000)

    print "Degradation set to 3"
    setdegradation(3,True)
    Rhino.PlugIns.PlugIn.RaiseOnPlugInSettingsSavedEvent()
    Rhino.RhinoDoc.ActiveDoc.Views.Redraw()

    rs.Command("_TestMaxSpeed _Enter")

    print "Degradation set to 2"
    setdegradation(2,False)
    Rhino.PlugIns.PlugIn.RaiseOnPlugInSettingsSavedEvent()
    Rhino.RhinoDoc.ActiveDoc.Views.Redraw()

    rs.Command("_TestMaxSpeed _Enter")

    print "Degradation set to 1"
    setdegradation(1,False)
    Rhino.PlugIns.PlugIn.RaiseOnPlugInSettingsSavedEvent()
    Rhino.RhinoDoc.ActiveDoc.Views.Redraw()

    rs.Command("_TestMaxSpeed _Enter")