Unfortunately, my old computer's performance doesn't improve by changing Preroll values. (OS-UbuntuStudio16.04_64bit) Andrea wrote: but why doesn't the whole world speak Italian? "Why are you speaking in English?" (Sheldon Cooper) My suggestion would be to speak in Klingon or UbbiDubbi! Take a look at https://www.youtube.com/watch?v=ETFmY93JnoU