I believe that to save on database operations, EBI will not update it's value for a point unless it has changed more than the drift deadband (called Hysteresis on some point types). This works well to filter out the noise. It does, however, make it hard (and unadvisable) to run PID loops on the data, as rate of change can sometimes be pretty sporatic. I believe honeywell hah always recommended running PID loops in controller hardware, and the server based point algorithms and point/server scripts are best suited to calculations like summing, unit conversion, etc. I, for instance, have MANY server scripts running to calculate tonnage to each of our campus buildings by reading in the flow, temp in, and temp out of the CHW and HHW. I also have some scripts that can sequentially start air handlers up with a couple second delay (to bring them on slowly after an outage, for instance). I would not try to control any PID type stuff from the server.