Poster; Some new units have a thermostat that can be placed elsewhere in the room to help avoid that false reading.
They should also have units that you can set the temperature and then set “the real temperature”.
For example if the temperature reads as 78 degrees and you want it at 78 throughout the room you should be able to set the unit
lower till it reaches ‘true’ 78 throughout the room.
Or be able to set the compressor to stay on for a certain amount of time even after it reaches maximum coolness as registered on the thermostat.