Are you looking for reasons why the cloak+mantle are great in mythic plus? If you are it's simple. You want to stealth between packs. if you do that, when you FOK from stealth, you'll have some stacks built up from the cloak, and they will ALL crit, and it will most likely give you 5 CP's, so you can immediately rupture. You can repeat that 3 times before your buff is gone. The guaranteed crits with the buff to your FOK's are crazy good dps.
If you're wearing the shoulder you're stat priority is mostly likely Agility > mastery > vers > crit > haste (don't believe me, sim it) The shoulders devalue your crit raiting a fair amount because of the burst they provide. The burst since you're crit is guaranteed does significantly better with more mastery, and more vers as it allows you to push out more damage in those crit buff windows. Currently I run 22% crit. If you're at 35%, most likely your mastery is suffering or you're giving up dps that comes from vers.
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Clicked your armory link. a few things if you want to majorly boost your dps:
-get the tier 4 piece, I know, easier said than done sometimes, but 4 piece is a big dps boost.
-replace that darguls as soon as you can for something that gives you a ton of agility, or an agility/mastery stat stick
-are the talents showing up on your character screen right now what you run? (MP almost 100% for sure, and subterfuge most likely will both net you a dps gain)
-Have you changed your opener for use with the shoulders? Below is what a lot of us are using now, and it works VERY well.
This opener is for speccing into Subterfuge.
garrote > mut > rupture > mut > vendetta > envenom > kingsbane > mut > envenom > mut > mut (now pool until KB dot is ~6 seconds remaining) > vanish
Select what to do next bases on if your mut > mut was:
4 CP's from mut > mut:
garrote > envenom > mut > DOS or continue with envenom > muts until crit buff ends
5 CP's from mut > mut:
envenom > garrote >mut > DOS or continue with envenom > muts until crit buff ends
https://www.warcraftlogs.com/reports...-done&source=8
This opener will pull you into the 2-3 million dps range easy on opening pulls.
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Looked at some of your logs, your openers on some of the parses are a hot mess. Remember, you have the shoulders, in the crit window your mutilates will give you 4 combo points, so you never want to mutilate back to back in the crit window as you'll waste a tone of combo points. I would recommend subterfuge for you, it will simply your opener in my opinion. Also, mid fight vanish, line that stuff up, you want to get the most out of it as possible. If you are going to use nightstalker, remember to vanish with your 5 CP's and a full energy bar if you don't have a vendetta ready. You want to vanish > rupture > garrote > KB > envenom. Or even better, if you're subterfuge KB before your vanish is up, keep and at about ~6 till KB dot is going to end, vanishe > envenom > mut > garrote > envenom > mut > envenom. The reason for the early KB is that when you vanish, you're buffing that last 6 seconds of the dot ticks with your shoulder buff, which can account for huge ticks of damage.
Also in your logs, it does look like you're running the pre 7.1.5 talents, If you're stacking mastery, and not using master poisoner that directly benefits from mastery, you're really hurting yourself.