So I upgraded to windows 8(from windows 7), installed drivers, plugins and Live 9 but when opening a project i previously worked on, zooming, expanding group track or tracks and general behavior has become really really laggy. On a new project it is perfectly fine but the moment there's more than a couple tracks it starts getting laggy again.

So frustrating, any help would be appreciated.

Also it worked perfectly fine on windows 7 no matter how many tracks i used.