Share your experience!
even 2-3 apps open if that apps take more than 300mb each it will cause hang ups, and besides there isn't really just 2-3 apps running, see your running services screen on settings and see how many apps are opened and cached. and how much ram you are left
I can't , I have the best experience with my device . if you are really worried about what's happening to your device I suggest you take your device to your local service center and ask them the technical specification of the device.