Hi Yuden,
thank you for your detailed response.
What I get is not to waste AS but use some auto attacks when it's at the time (outside vulnarable window). I knew, AS with low focus is not that good, but thought it's at least better than doing "nothing". Thats seems to be wrong ;-).
You mentioned delivering 3 or 4 AS inside a vulnarable window. That doesn't work for me at all. Most of the time, I manage to get 2 AS in one vuln. window. I think the reason therefor is my haste rating.
My stats at item level 867, see here.
agi 24461
crit 28,03 %
haste 5,56 %
mastery 24,