Hard to say, but I will make a couple of observations:
calibrating everyday can be problematic and you will see variations due to a number of reasons. Typically on a new monitor the standard recommendation is once a month. This should reduce the variations from ‘over’ measurement.
you might try to stabelize your ambient viewing so that the temp is consistent from calibration to viewing times. If the ambient light is variable then that will introduce variables into your viewing. Also, a darker viewing environment is preferred for consistent viewing. Not pitch black, but dark enough to reduce the effect of your environment.
