It get´s harder for the Fire Team to dodge and spot the Predator when they are pressured through AI.
Most of the time it´s too easy to clear a camp and most of the time in consequence it´s really easy to scout for and to spot the Predator before he can even engage the Team because they have nothing else to do.
There is actually only one moment during a match that the AI gets dangerous for the Fire Team and that is when the extraction spawn AI adds up with the Predator Corpse defending AI and suddenly you got a big enemy wave.
Make the quest clearing harder in general. This can be done in many different ways. Make the enemy AI more vicious for example or balance their damage output.