HI THERE! WHY ARE YOU SCREAMING!
Long story short: screaming and saying "urgent" will get you exactly one thing: the recommendation to actually pay someone to do your work. This is a public forum, not a free "do my homework" wishlist.
Also: You seem to have done a LOT of investgation and have spent at least 10 seconds writing this post here. Congratulations! You actually have done zero useful work to get real help on your issue.
Do you have any external auth enabled? LDAP, AD, etc?
Please check nqserver/nqquery log ,it may be the init blocks which is taking time and causing the slow login
Also such issues are very common can easily be tracked down and resolved with help of logs.