Slow Downloads

I am currently downloading COD: MW remastered. My internet is not really the best. It usually takes 1Gb an hour. The game itself is 120Gb so I would have to wait approximately 120 hours. Is there any other way I can download it during sleep mode. Is there at least a way to make my download...

My main desktop is used as a plex media server. It also runs sickbeard, couchpotato, and Sabnzbd. I occasionally edit photos with photoshop and am looking to put together some home videos with a basic editing program (something like imovie for pc). Otherwise it is used for web browsing sometimes...