Regarding the amount of stamina consumed when conversing with AI characters

There are a few issues regarding the amount of stamina consumed when conversing with characters.

First, the basis for the consumption rate is unclear. For example, Seaartpro is listed as 0.6, but it’s unclear what that 0.6 is based on. Considering the amount of text, it’s obvious that it’s not based on consumption per character, but if that’s the case, what exactly is the basis for that 0.6? This becomes even more unclear due to the factors discussed below.

Another issue is that as the conversation progresses, the stamina cost increases by nearly three times. Even with the same amount of text, the consumption skyrockets. In other words, stamina consumption is unrelated to the amount of text. Since the reason for this has not been explained either, it only leaves us feeling frustrated.

We are paying a significant amount of money. Even if you have no intention of changing the specifications, please at least clarify the criteria and the reasoning behind them.