How often do the glowing blue auto-save crystals refresh? I've accepted the fact that I need to abuse their healing/resurrection powers to keep my band of merry prisoners alive.
It doesn't take too long. Assuming all of the healing crystals refresh at the same rate as the one I tested on (and this definitely fit the ballpark for what I saw throughout the game), they refresh as follows:
This also implies that the ratio between "resting time" and "normal time" is 4:1.