Found a solution: in Opera 'Tools/Prefereces/Advanced/Browsing' deactivate 'Smooth Scrolling' Anyone knows why?
glrossetti
I've noticed that if ObjectDock is loaded, it causes Opera to refresh the page when you switch from another application. If I set in Opera Tools/Preferences/Advanced/Browsing 'Loading:Redraw instantly' instead of 'Loading:Redraw after 1 second' the page appear faster. But the switching cause a cpu overload (36%), because Opera redraws the page. If ObjectDock isn't loaded, when I switch to Opera from another application, the cpu remains nearly
Same thing as above: the page area takes a full second to appear when I switch from another application/window. It's objectdock (free) that cause it, because when I unload objectdock, it doesn't happen. I don't know why, but it doesn't happen even when Opera window is in full screen mode, or when the Opera window is NOT hidden in any part by another one. ...And no, the position of the docks doesn't change this weird beahvior. I've a