I am still using oacs 3.25 chat, and only recently discovered something funny. Each chat message is identified as a new user to the chat system. Could it be that this cause chat to slow down after 75 lines of text? I know acs 3.25. chat is no longer suported, but if the acs 5/5 chat packaqe uses the portions of the old code this maybe usefull to know.
Cheers
Ben