Minutes problem?

I was playing a regular season in Dynasty mode and I've been simulating games pretty much.I only played the last quarters if it's a close game.Now I am in the playoffs and when I enter the game in the 4th quarter I only get to play 3 minutes?!(like the quarter lasts 3 minutes).I don't understand what's the problem,since it lasted 12 minutes in the regular season.Any patch for that?

Did you tried adjusting the Dynasty/Playoff settings?
Adjust your gameplay setting to 12 minutes per quarter (as you wanted it to be)..as I know both playing and simulating minutes are differently assigned respectively..simulation minutes are set 12 minutes in default for season and dynasty modes..you'll need to check your gameplay settings..