Lawless1994, did you ever figure out what was wrong? I'm seeing this now also. Not just A/C but winter time heat. For example, today in freezing rain conditions I turned on the front defrost manually with full fan to heat up the windshield rapidly. It worked nicely for about 30 seconds then automatically drops down to low fan speed. I have to stop the car, turn it off. It works for about 20 or 30 seconds then repeats the issue. Thank-you. (2018 Qashqai, Canada)