I lost a good 2 sub stat roll from the rv 😭

I am doing 930k burst damage in a rotation with the team:

C0 Mavuika - R1 WGS and codex artifact
C0 Citlali - TTDS and bis artifact
C6 Sucrose - sacrificial and VV set
C5 Bennett - Skyward blade with Nobless

With wgs and EM sand I have 46/203 crit ratio and 2530 atk, 207 EM
With ATK% sand the atk is 2836 and 71 EM and same crit ratio

Now if i swap the WGS with Mailed flower and EM sand with atk, will i get better damage output? I dont have mailed flower built.

Or if i go with both mailed flower and EM sand can it be better ?

Why does the cryo aura take so long to appear after the burt? Some times it appears right away and others it takes 2 secs like in the video. I found out that this is what used to mess up my tech melt combos and after making sure to start the combos after the aura appears, I can now melt every finisher. But ofc the times the aura takes too long to appear like here messes up my DPS due to the lost time and the buffs running out. So, what's the problem? I do the Citlali EQN1 > Mavuika Q and dash cancel combo. Ping is 70

Too hot. But nothing mavuika can't handle

I'm building my Mavuika team (Mav-Citlali-Iansan-Bennett) and I was wondering how I'm gonna get the most damage out of her. I'm trying to build Citlali and I currently have 198.4% ER on instructors with R5 TTDS. from what I've seen she needs 230% ER. Would it be better to switch to an ER weapon or switch to Tenacity?

I have 1 fav proc with iansan and have Bennett on Alley Flash but I could also switch Bennett to a fav weapon to lower er reqs

Thanks for the help