A/C not reaching to coldest settings temp

Hi all.

I have a 2012 Octavia with the 1.2 TSI CBZB engine and a single-zone, 3-knob climate control system. I live in a Middle Eastern country with a hot climate, and the AC on its coldest setting is performing okay, but not great. Even after refilling the refrigerant gas, there was still no improvement. When I point a laser thermometer into an air vent with the system set to maximum cold and air recirculation turned on, it reads about 14c. While I have read about the compressor control valve failing completely and causing issues, I haven't found any information on it partially failing. It feels like my AC simply can't reach its true maximum cooling capacity, only getting to about two-thirds of how cold it should actually be.

Anyone experienced this?