Something seems off since the last patch. Experience gained from kills and quest turn-ins is lower than before, especially from daily writs.
Daily writs are giving me the same experience as before: 823 outside of enlightenment on a level 50 toon with ESO+ (748.5*1.1)
What kind of numbers were you seeing before, and did you have an event bonus, psijic ambrosia, a scroll, or enlightenment active last time you were checking? The most recent event doubled XP without actually requiring any activation on our part, so it could have been easy to miss.
Sorry, my error. I can confirm that I ran out of Enlightenment for the first time in months - probably due to trying to power level my companions these last days. Somehow I forgot that this was a 4x multiplier.