How to complete the optional Cayo Perico Disruption missions to weaken enemies' weapon damage, body armor, and air support.
While not mandatory, completing the Disruption setup missions for the Cayo Perico Heist can significantly ease the difficulty of the finale, especially if stealth fails. These missions target El Rubio's supply lines, weakening his guards' weapons, armor, and eliminating hostile air support.
Disruption missions are like the Duggan Shipments from the Diamond Casino Heist separated into a three-part mission. These are not necessary, but completing them will provide an added advantage during the heist finale.
Weapons
In this optional prep mission, you must eliminate El Rubio's arms dealers. There are always three dealers spread all around the map. You only get 10:00 minutes to take them all out.
If you manage to take them all out within 10:00 minutes, the damage done by El Rubio's guard's weapons during the heist is reduced significantly. You only get one chance at this mission every heist. Do not worry, as each dealer eliminated decreases the weapon damage.
This means even if you took two of the three dealers, you should see some considerable difference in the damage dealt during the heist.
We recommend that you either use an Oppressor Mark II or a Buzzard helicopter to reach the targets faster. The homing missiles on these vehicles are useless as they won't lock on to the targets. They will be used solely to go from point A to point B.
This is the reason why you can even use the Sparrow helicopter (if you've bought one) to go to the arms dealers. Another quick tip for all disruption missions is to press the handbrake button once in the air if you use the Oppressor Mark II. Your Oppressor will reach the maximum speed of 130 km/h.