I own a one year old Lenovo G510 running windows 10.  Similar to this: http://www.amazon.com/gp/product/B00HIYA9ZM?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00 except I added some additional hardware.  My problem is with lag.  I click on an application, anything really, blue circle comes up for over a minute.  Wait for circle icon to stop spinning, click on another application, same thing.  They do open btw.  Takes 5 mins. just to surf the internet by the time the laptop boots up and I open my browser.  Any ideas?  I work with computers so whatever you got.
			
			
				
		
			