Melee hunter dps min-maxing

Melee hunters fellows, I need your help.

The situation is, I have a decent gear (set 5 tier1, set 3 tier2) with fully enchantment, using 2hand Zinrokh, kicked in almost every consumable in raid. Rotation pretty Trap,Mongoose and Raptor on time, Lacerate when trigger, sometime wave in Wingclip if all skill are on cool-time. But I could only achieve around 600 dps.

Checking raid log and seeing people doing 1k+ dps, while gear is not quite special (check from turtlecraft.gg/armory/), the only different is some people using BRE and the major is dual wielding 1h weapons. My current weapon skill is only 300, but up to 305 only increase dps about 8%, therefor I am pretty confusing.

This these any way help me to improve my dps, I dont think that weapon change (to dual weapons or upgrade to BRE) could bring double dps. These must something I am not doing right. Very appreciate any comments.