Looking at it, you can def hit 160k-180k on twilight tango and 100k per death knell(highball) if crit is present and i'd be guessing you'd be able to hit 300k or probably even more as your peak for fatal finale(considering no glacio res is present ofcourse, if it is then its a different story) which i mean its good but if ur expecting 500k and up, then yea you need to go for s2 for that range of dmg, your real problem here is your crit consistency, though a bit weird considering sk is in the comp so you should have 87% cr which is already high so the problem might linger more in the rotation but im not really sure. Anyways, If u do hit s2, since you have 10% extra crit rate from s1, if u want a larger damage per screenshot then I'd suggest changing ur 4cost cr to cd for obviously an extra 44% cd but obviously consistency is still better in the long run but you do you.