QUESTION ABOUT GARYOU

hi guys i m confusing about this skill
even 10 stack combo my damage garyou still on 500k at maximum ( on armor break) combo garyou smith ( don yeti)
after use ten ryu spam buff kaikiri still cant up the damage ( try on tyrant hard mode) the maximum damage still same

how to get more damage on this skill.
my attack stat 1644 ( modestia + tyrant)
thanks

 

getting garyou dmg higher means ditching all your unsheathe gear and trading it off to crit damage, atk% equip. not worth it as you need to stack 10 katana skills and with that amount, you can do more with tenryu with unsheathe gear.
now you only need 110 crit rate for garyou but they should have buffed damage for so much work. i would even prefer the old - 100 crit rate garyou if they would make it an unsheathe skill.

elemental katanas help as well btw.

 

spaming tenryu even do more damage . that true

 

is your zantei is lvl 1?