It would be interesting to know what research they use to determine how the calculations adjust based on workload.
It seems to be commonly held that increased workload increases the chance of DCS and dive times should be adjusted accordingly. But, no one, for any algorithm, seems to have data-based knowledge about when to begin the adjustment (ie how much work triggers the higher risk) or how much to reduce the NDL to compensate. It seems most divers make a guesstimate about this (i.e. "cut the dive a few minutes short" of the NDL"). So, don't see any reason why an algorithm that takes into account actual bio factors would be any worse, especially higher breathing rate, which, theoretically, might tie to increased gas absorption.
The concept of using heartrate and breathing rate to make calculations seems sound, but how Scubapro implements it is a mystery. Does anyone know what the data actually says about this issue in any case? Do high exertion dives that stay within the NDLs of most common algorithms result in statistically significant higher instances of DCS or doppler-verified bubble formation?
This feature is not a reason to not buy it, though, as using these adjustments is purely optional. I have the same option on my Sol but do not use it, precisely because I do not know how much I am being penalized or if I am losing bottom time unnecessarily.