Okay, I've tested Systhem (Galaxy Tab2). App installed and the first impression was that it ran smoothly. You notice on the Facebook app, if one scrolls clearly there in the news by the very large images shown. Task Manager uninstalled. Result: Systhem jerked back more. So back on it the part!
The reasons that should make such a pointless app, I can quite understand, but this Task Manager has made the handling of my Systhems definitely snappier!