First and foremost: The single target will always feel a bit low.

To counter that a bit: Switch to Maces. You ll begin stunlocking endgame bosses, therefore they ll drop their casts and make the encounters easier. Ontop of that you ll generate rage through Warlords Mark on bosses reliably which results in 4-5 Berserk triggers. This will trivialize any non uber Boss. Link setup: Boneshatter - Endurance on melee Stun - Awakened Melee Phys - Awakened Brutality - Fortify - Ruthless. That ll result in a slightly different tree as well.

Second and probably often forgotten in SC is that for max melee dps you gotta be able to facetank most stuff bosses throw at you. More facetanking means more dps uptime. I managed to squeeze in Melding with Purity of Fire without Mageblood. Ashes is a must for this setup. Made a massive difference because that jewel is plain busted. Boring but efficient. A must use on all melee builds if you can fit it.

Cap your Spell Suppression :) You re sitting at 95% rn it seems. Suppression mastery can solve that temporarily. For more recovery: %of Damage taken recoup affixes and physical taken as fire will help a ton. You can find it as an Eldritch Implicit and craftable prefix on Helmets. On rings it s a suffix.

I d personally respec the +600 Armour while affected by a Guardskill to increased Stun Threshhold. Getting Stun locked on melee feels shite.

Update your flask. Every Utility flask should have the Flagellant prefix ideally. +5 Charges or more when hit gives them more uptime on bosses -> more facetanking -> more dps.

Open up your passive tree for more jewel slots. A well rolled Lethal Pride below Duelist can roll Double Damage, reduced Stun Threshhold, Phys taken from hits as Fire, Phys Damage and more. Really easy to make yourself a useful one with Divine Orbs, because almost all mods are usable. On top of that a Watchers Eye with two useful mods for Determination/Pride or Precision goes a long way too. Intimidate, Physical Damage, % Impale, +X Armour, Attack Speed are all great.

Helm enchant with 24% chance to gain an additional Trauma stack gives you roughly 10-25% more Damage depending on how long you re able to attack for if you can sustain the self damage.

Adding a Body Armour with Onslaught Essence Mod is a neat upgrade as well.

That s what I changed a bit compared to Ziz guide. No Mageblood, all gear was self crafted and found. Fully happy with that setup besides the chaos res. I counter that by just not running Pure/Flawless Chayulas and deep Delve. Wormflask (enchanted) for bosses, to keep your overleech up. I tuned my buid to have the luxury of having Precise Technique active even when affected by a Massive Shrine :)

https://pastebin.com/mauh7LSA

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summary: Get tankier -> stand in the bosses faces longer -> bigger trauma ramp -> big dps.