Steam ArmA 3 Alpha - 0.5.102571
Since I had access to Alpha builds on Steam from the initial upload there, I did not notice this in earlier builds, the second loading bar was variable in duration and usually really short. It used to increase in length if I had put myself in a helicopter with the flying status, but not as long and fixed in duration it is now.
Hardware seems to have no effect, ArmA3 on my system is currently on an SSD, but there is no difference in the second loading bar even if I put it on the slower HDD. Amount of RAM also has no effect on the duration of the second loading bar. The first bar is slower on the HDD and almost instant on the SSD as expected and in case I put tons of units on the map. The second one is literally always at 15 seconds.
While I have no clue what's actually going on during these two loading bars, the second one gives me an impression as if there is some sleep()'s or something of 1 second interval during the second loading of the loading bar.
I've attached a DxDiag as this might be relevant to this report.