I am having two problems with simulation:

I am running a dynamic simulation, and it ran all night and remains at 13.1%. The memory usage is still fluctuating and the "Time Step Number" occasionally increases, but the progress is still 13.1%. The current task is listed as "Solving contact constraints," and it has been for as long as I've been looking at it. It also will occasionally go to 100%, but then it will reset to 0%. Is it that there are far too many time steps? I used the automatic time step setup.

Also, I had run a similar simulation yesterday in only an hour. Whenever I went to animate the von Mises stress, nothing happened. I could only select the stop button, but nothing was playing to start with.