[Jester]

According to people I know who have access to the code, a lot of code is very inefficient. However, the coders have to balance their time between adding new features, fixing bugs and optimizing old code. Since the optimization is balanced against 1 hour ticks, and not 15 minute ticks, I assume 2 minutes is seen as an acceptable maximum.

It's worth noting that this is an improvement upon the 4-5 minute ticks we saw only a few rounds ago.