We will be rolling out a server-side change that will adjust the Domination Game Mode team timers from 3 minutes down to just 1 minute.
This change is server-side only and will not require a client patch. However, it will take approximately 10 minutes for the change to propagate across all servers. For that reason you may see a timer of 3 minutes in one match, and a timer of only 1 minute in another match.
Once this change has finished propagating to all servers, all Domination Game Mode timers will be set to 1 minute.