There seems to be some issues with this. I did a dive and said i had to do stops after making the first 2 stops it then would sit with the Stop60 but time was 0 for atleast five min then switched to 50 same thing I ascended after a few feet i then changed to 40 and then sat on fourty for ever the Game went on for 1:48min untill i came up and died. I understand that you need to decompress I think the time in this game is rediclously too long. Not many people can sit there for those long perods of time. Not sure if this was a glitch or the way it was programmed..