Sorry for being MIA.
Was really busy. We now upgraded our SQL server to run on a dedicated SSD. And upgraded to the latest software again.
We are still trying to figure out how to reduce the lag. Could you guys give it a try and let us know if the performance are better? And if you still experience lags. Please let us know when you are lagging how many users were on and around what time the lag happens.
Also I am going to reply my PMs slowly, Sorry because I have so many PM and emails to reply to. So please give me a little bit of time. I will get back to you as soon as possible.