I won’t go into log details as i struggle to go through my own at times lol. What i will say though is your mastery is quite low, at 62%.
There is only 3 ilvls difference between you and I, your stats are
Crit – 31% , haste 10%, mastery 62%, and mine are
Crit – 34%, haste 7%, mastery 90%.
Personally i try and float around the 100% mark but recently dropped to 90% with the new patch and equipping the legendary gloves. While not an in depth answer if you improve your mastery you should see some improvement at least