I don't have an RV like yours, but we have experienced something similar. If we set our thermostat to 72 or 73, the unit cycles quite often. If we bump it up to 74 or down to 71 the cycles are greatly reduced without any ill effects to the ability to keep the TT cool. I think these thermostats have some quirks.
Lee and Anne
2016 F250 2WD CC SB XLT 6.2 3.73 3,295 lb payload cap.
2014 Salem Hemisphere 282RK 8k lbs loaded, Equal-i-zer WDH, TST 507 TPMS
2016: 33 nights camped; 5 nights booked