Well i have same problems with AI all the time. Try to turn off super AI...Maybe it will be a little better.
Anyway i will give you some instructions how to complete this mission that could be great but it is just a stupid GTA type because of time limits for different objectives(hostages die, aziz escape, scuds launch)
At the start jump in bradly as driver and just drive fast to the hostages. Dont attack enemies on the way, just drive...
You can leave your squad in the bradly and clean the area yourself. I did it that way. At the top of mosque you will find hostages, they will be safe and sound if you are fast enough.
Next objective... Again take the bradly as driver and drive to all scuds and destroy them... You don't need to attack enemies on the way because thats a waste of time... Be careful for any AT soldiers, those could be a problem...With some quick moves you can go pass them.
When all scuds are eliminated you can just stop and wait for Aziz to escape - Mission ends. You will kill him in next, last mission.
