Call of Duty: Black Ops III is a 45 GB download. If your Internet connection's download speed is 10 MB, the download can take about 10 hours. On a 30 MB connection, the download can take about three and a half hours.
Call of Duty: Warzone System Requirements
Minimum
Recommended
RAM
8GB
12GB
HDD
175GB HD space
175GB HD space
Network
Broadband
Broadband