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Speed Readout on Edge 1030 Plus Is Extremely Slow

hidy, all.  sorry if this has been addressed elsewhere, but i searched and didn't find it.  anyway, my problem is that the speed readout is extremely slow, and appears to be averaging as it changes.  i start accelerating down a hill and the speed doesn't change for 4, sometimes 6 seconds.  then, when it changes, it seems to go up by 1 mph or so at a time until it gets to my speed.  i'll finish a descent and immediately start another climb, and the speed will still be increasing after i started climbing.  i have an old edge 800 that i took to confirm this.  it is consistently 3-4 mph faster than the 1030+ on descents, and 3-4 mph slower on climbs.  and it jumps right to my speed, instead of counting its way up.  and the speed data changes fast, more than once a second.  no, i do NOT have the data field set for 'average speed'; i've checked that more than once.  this is so bad that right now i consider the unit inaccurate and almost unusable.  any help anyone can give me would be appreciated.  thanks

  • So from what you report I assume you don’t have a speed sensor therefore the speed is derived from changes in GPS position, this is not very accurate over short distances thus the speed number will jump around a lot. The value will be dependant on the quality / strength of the GPS fix and will vary as the fix varies due to tree coverage, taller buildings etc. I can’t comment regarding the difference between an 800 and the 1030 but different units have different software and may calculate the speed via GPS position change differently.

    IMHO the very best value addition to any Garmin is a wheel speed sensor which greatly increases the accuracy and stability of the speed reading. It also eliminates the tendency for the position to hop around when stopped because the unit knows when it is truely stopped. 

  • thanks, LR.  i broke down and bought a speed sensor