Just a couple things I see.
1. You’re destruction spec with a sp/int meta instead of a crit/crit dmg meta.
2. You’re well over 11% hit and still have several 16 hit gems equipped.
3. You’re neither master demonologist fire or chaos bolt specced…where exactly is your damage coming from?
Just curious as to why you did these things the way you did. My gear is lacking in comparison to yours and I manage 4.7k minimum on patchwerk. I’m not in a 3 Drake guild but shesh.