>>14239466if you're using her as a support just equip her with an energy recharge weapon and go full def on her stats, that's the only stat that matters for her dmg and buffs.
If you're going to build her as main dps create the crescent pike, I think that's the best f2p weapon for her as of now in that role.
>The attack speed buff seems a bit broken on some charactersyea and as far as I know it stacks with chongyun's elemental skill buff and the anemo resonance buff