wow that is one hell of tough decision to make also have to look at the sub stat
Senario 1 :-
2800 demage 180 Speed
Cidd S3(soul burn) = (2800*2.5+(180*0.0021)=37.8%)*1*1.871= 18,047
how much in real life above data translate into demage , assuming PVP enemy team def 700
18047*1.0 (assume no elemental advantage)/(700/300+1)=5,414 demage no critical
if critical assume 150% critical demage, your demage 5,414*1.5= 8,121, is this the demage u deal usually? of course this havent include the skill enchance u put in skill 3 and no speed buff
if you enchance your S3 max add another 30% demage
Cidd S3(soul burn) = (2800*2.5+(180*0.0021=37.8%)*30%)*1*1.871= 23,461 * 1.0/(700/300+1)=7,038 if no critical , if critical assume 150 cri demage, your demage will be 10,557
Senario 2 :-
Cidd full Awakening attack 1029, to boost the attack to 2800 (assuming you are wearing T6 weapon which +300 demage flat) you still need 1,500 attack which equalvalent to 150% attack %(roughly) i am assuming you are wearing attack % neacklare, Ring and Shoe. so if you drop 55% attack% shoe. your attack will only boost 100% which is around 1000. means your final attack stat around 2300 instead of 2800.
to put into formula
attack 2300, speed 220
Cidd S3(soul burn) = (2300*2.5+(220*0.0021)=46.2%)*1*1.871= 15,728
Translate into real life demage assuing enemy having 700 def
15,728*1.0 (assume no elemental advantage)/(700/300+1)=4,718 demage (no critical)
If critical assume 150% critical demage, your demage should be 4,718*1.5=7,077
if you enchance your S3 max add another 30% demage
Cidd S3(soul burn) = (2300*2.5+(220*0.0021=46.2%)*30%)*1*1.871= 20,447 * 1.0/(700/300+1)=6,134 if no critical , if critical assume 150 cri demage, your demage will be 9,201
Here you go. above should solve your doubt but u dun get to move first hahaha
Thanks for the clarification, that's clear my thought and guess I just use attack boots till I get nice speed sub Stat on other equipment.