What causes the software to get kind of laggy? For instance, I'll try to post or edit something and I get the the four bars in the right hand corner as if it is just thinking or trying to process. Or when trying to tag someone I'll enter the first three characters and their name will not pop up for it will take several seconds. At first I thought maybe it was my internet or my server but this happens somewhat frequently on another xenforo site that I frequent. Any suggestions?