My simulation is not frozen, but after processing the first almost 14 seconds of the 20 second simulation fairly quickly, it is now taking about 5 seconds per timestep. The timestep is 0.001 seconds.
*grumbles*
.....and everything is unstable and trying to go to infinity.
Time for a lunch break, I think.
Quit the original simulation and now am running it to 14 seconds to see why it just grinds to a halt at 13.9ish seconds. #gradschool