Thanks for hint. Didn't even know about this option. Anyway, even with -XC it takes more than 3 and a half minute to index the help. Assist++ initialization is quite fast, about 4s.
It is slow even in case of a fast network. If you want to use TheIDE over a modem (DSL or cable) it is extremely slow.
This is why I love VIM. It is fast in case of any type of connection, including regular phone-modem, and the editing capabilities even better than with TheIDE editor
Two commands below should help you with improving performance.