Originally Posted by dhuey

Sure, you should have plenty of time. I suggest leaving T2 and heading over to International-G around 75 minutes before your departure time. Keep in mind that you can re-enter security in either of the two T3 security checkpoints and walk airside to International-G. I would do that if you see that the line isn't bad. If it looks really long, you can just walk landside to International-G and enter there.