Anybody useing a garmin 18x 5hz?

That little guy is so jumpy that it makes a bad map.  no way to slow it down so.............

when driving under 6 mph it will jump side to side pretty bad.

put a Garmin 18x that is only 1hz and it seems reasonable.  the 5hz and the 1hz are different antennas.  I emailed to see if you could change the 5 to a 1 and no go.    

Any one else?   this might save somebody from ordering the wrong one.