I am looking for a answer to this problem. When ac is operating and outdoor temp is above 80 degrees water is forming on interior walls of one room. Room is in the middle of the home and has conditioned rooms on each side. The room does have one outside wall.

The room in question must have a high moisture rate. Take a sling psychrometer test and see what the temp and humidity is in that room. Then take the necessary stemp for correction. Usually more airflow or a return air in that room will be of great help with the situation. Also look to see is any leaks (air or water) is getting to that room from the outside.