Is this a comfort issue, or a "why is my ac running all the time" issue?
One may be a performance problems, the other a problem of improper/no homeowner education by the HVAC company (when temperatures go beyond design, do not expect equipment to move temperatures quickly. Sizing is a balancing act that dictates really good design means equipment needs long run cycles. To accomplish this, rapid recovery at beyond design temperature can not be achieved or you get short cycles and clammy, moldy house at milder temperatures.)
Are you willing to try an experiment? Drop your program set point by 1f at each time period and see if your comfort improves.