There may be a difference between the update frequency to the server and the resolution of the track that is displayed. Each update to the server can include all points tracked since the last update, so the server can display as fine a resolution as your GPS is tracking without duplicating that same frequency of update.
So, even though your GPS is probably checking every second or so,
GPSGate could, for instance, update the server once every five minutes with dozens of points captured by your GPS during that five minutes. That allows the server to display the same track resolution as you see on your GPS without having to make so many updates.
I hope that makes sense.
...ken...