As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is.
Attic too hot for ac.
Hang an outdoor thermometer in your attic making sure its range reaches at least 130 degrees fahrenheit.
Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures.
My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
We live in south east texas.
If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage.
My attic is ridiculously hot if i install a fan pull out hot air to help cool my attic will my ac work better right now it takes two to three hours to drop the house 4 degrees.
In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth.