How SS is calculated and works

[CookieMonsta]

From the people I spoke with before this was done the common thoery was that while tooltip didn't show it, each point of SS still increased the GCD. There wasn't any data either. It is also quite illogical for it to only be useful only every 26.4 points.

I actually thought it made a lot of sense to be tiered even before Dervy's work. You can save a lot of number space and processing power server side if you implement numbers and math with less precision. FP32 and FP64 hardware isn't cheap so I'm sure YoshiP made this decision to help optimize the maximum possible players per server in combat. The tier-ing gives the illusion of continuous granularity so most players won't notice.