Project files can grow very fast, and resources disappear, ver2 had some problems with memory release, I’d max out the memory to 3gigs it would almost double the ammount of memory Ppro2 would have available and monitor memory usage with the task manager and when it get low, save and reload Ppro, it will free up stuck memory and reduce the chances of a crash.
Ppro2 also works with wav(pcm) files better than other compressed formats