By upping yr mastery, u noticing a sharp incresing in EXP, and a low decrease in SP. however by lowing yr mastery, u can only expect a little increasing in Sp but a sharp decrease in exp
when i m L32, i farm Flower
0 gap i get 2200+ exp and 200++ Sp
9 gap i get 250+ abd 510++ sp
see the sharp diff??? dat why many farm to the max at 16 and level tons fast with 0 gap...
but however if boring, and also up to persional perference
IF you get 2200Exp 200Sp at gap 0, you will get
220Exp, 380Sp at gap 9.
That means the bonus sp per monster is not extremely big at gap9 (just +90%), but you will stay in the level about 10 times longer due to the fact that you only gain 10% of your normal exp. So, in the same level you will get 19 times the sp at gap 9 compared to gap 0. (If you dont do any quests, that is)
One thing I have noticed is that people keep saying masteries, but when you are talking about it, are you talking about Weapon masteries, or Elemental masteries