I just recently received the new macbook air and so far i really like it. However when downloading large files on my slow internet connection my computer will tend to fall asleep before the download is done. On my old macbook (circa 2008) the display would go to sleep but the computer will stay running to do task like listening to mp3's and downloading files. I havent seen such a setting on my new laptop running mojave. I was hoping there was a solution without having to download apps like amphetamine or something similar. Any help would be appreciated. Thanks.