Do a race of any kind and afterwards select the "watch replay" option. Save the replay. Now, go into Gotham TV from the main menu and select Gotham Heroes. Choose someone's race to watch. Once it starts, pause the game and choose to abandon the event. Do this 10 times total. You can watch the same race. It doesn't have to be 10 different races. Now, exit to your dashboard and then reload PGR3. When you get to the main menu the achievement will pop up. Happy Gaming!