Two solutions. It's up to you or your boss to determine which of the 2 is best for you.
1. Use a faster connection.
2. Do it in the evening when nobody else is using the connection.
We have 6 branches on 6 Mbps ADSL connection mainly used to RDP of Oracle based Application. Our AV and Patch updates servers reside at Head Office. All the clients across branches and HO receive AV and Patch updates from these servers only. Whenever an AV updates run on one PC in any of the branch it chokes up and users can't use LIS application. So, I need a best solution where I can utilize my existing AV and Patch server license in an optimized way.