AUTODYN has an internal buffer to store the time history of variables and the summary of energy and material when plotting. This buffer has a memory limit. The error message ‘Too many time increments to be processed’ shows that the time history file is too large to be processed by AUTODYN Time History Plot. What you need to do is reducing the size of the time history file via HISTORY -> Reduce. Choosing any integer value greater than one will reduce the size of your time history and summary file. Then you can go back to plot them. I would suggest you to start with 2. It would be a good practice to make a backup copy of the time history (ident.his) and summary (ident.sum) files before reducing their size,in case you need to go back to the original history and summary files.