I have had exactly the same experience, including the uncontrollable sobbing, with MS Word in its various states of perfection. (Try spending three hours on the first ten pages of a short story, getting up to get a cup of coffee, getting interrupted and dragged into a half-hour conversation, and coming back to discover that the computer went down and Word recently turned off autosave without mentioning it to you.) P5 has some thin ice, and SR3 is going to help. SR4 will be even better. Maybe the magic number is SR5. Meantime, when it is is good, it is very, very good, so I only go back to P4PP when my clunker can't handle the polygon counts.