I have AC runnig of a windows 2003 SBS , with 8 work stations
and a combination of win7 & win XP pro.
I have not experienced any speed problems or prescription problems with v 5.029 & after upgrading to Version 6.10.
The crystal reports are the summaries that show up when you print summaries of pt visits for meaningful use and other reports that you run in amazing charts.
After all of the posts on the speed issues with v6, it is fairly evident that it seems to have little to do with one's hardware. It seems hit or miss. And, Crystal Reports is likely an issue.