Dear....personally i dont think that Ecas will quickly change and updated. Never happened in my case and have observed few many others.
My point is dont simply rely on this status. Process keep on moving sometimes without any update on the site. In my case, never changed since last submission of documents for about 10 months besides other formalities took place in between before visa.
Only once it changed when visas were stamped to DECISION MADE...and that was ONE WEEK AFTER VISA STAMPING.... ;D
Gud luk