Yeah, I suspect this is a VM problem, not a MASON problem, though of course I'm not certain.

> On Mar 5, 2021, at 9:58 AM, Siamak Sarmady <[log in to unmask]> wrote:
> 
> Sean Hi,
> 
> I use windows 10. I feel everything, even the code is slow.  It is not just the drawing.  I have a feeling that JVM must have some problem.
> 
> I guess I should benchmark the JVM with some code then...
> 
> On Fri, 5 Mar 2021 at 14:53, Sean Luke <[log in to unmask]> wrote:
> What OS are you running?  Is the model suddenly slow or is the display/drawing slow.  I've found significant slowdowns on MacOS when running under visualization.
> 
> Sean
> 
> > On Mar 5, 2021, at 9:45 AM, Mac Sarmady <[log in to unmask]> wrote:
> > 
> > Hello
> > 
> > I am using Java 11 to run mason simulations. A few weeks ago my simulations were reasonably fast (crowd simulation with a few hundreds agents). 
> > 
> > Then I had a pause and when I ran the simulations a few weeks later they are extremely slow (perhaps between 4 to 10 times?)
> > 
> > - Has anyone encountered such a thing on his/her JVM and simulations?
> > 
> > - Is there a benchmark on any of the mason examples that I can test and see whether the problem is from the installation or something inside my own code (I don't remember changing it in the period)?
> > 
> > Regards,
> > Mac