[SalesForce] What does Lightning Debug Mode do exactly

One of the techniques I use to debug is create a lightning App and use the component inside the app and only once it is perfectly ready I host it on community .

The problem with community is everytime you change you have to preview and publish and that takes lot of time .

Instead create a lightning App .A sample below

<aura:application>
  <c:MorgageComponent/>
</aura:application>

You can open in SFDC with URL /c/MortgageApp.app where MortgageApp is the App name and then you can debug in the browser console .This is really simpler compared to debugging with community skin .

Only workaround I found so far is building a throttle

<aura:attribute name="refreshTimestamp" type="Integer" default="0" />

forceRefreshViewHandler : function(cmp, evt, hlp){
    var lastRefresh             = cmp.get("v.refreshTimestamp")
    if( hlp.ts() - lastRefresh > 1000 ) {
        // doing my stuff here
        cmp.set("v.refreshTimestamp" , hlp.ts() );
    }
}   

The standard component is hammering usually it's 4 bullets within less than 50ms so it seems to work. But hackish as hell and still no explanation why it's necessary at all.