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I recall Strava (Android,IOS) captures GPS data every 10 seconds (, whereas Garmin captures every 1 second, and I'm not familar with CatEye.)
My own experience with Strava on a Galaxy S5 is that it auto-pauses more frequently than Strava on an LG V30. Sometimes the S5 doesn't come out of auto-pause quickly enough, then the GPS data looks like I teleported from one spot to another.
I mostly use Strava as an after ride diary, a way to corrolate my heart rate with climbing intensity, and to recall names of people who rode with me.
Rarely, when I have GPS problems or Strava crashes, I record a ride with some super fast speed, and someone flags my ride because they lost their KOM. LOL!
I forget about Strava when I'm riding. Otherwise you do antisocial things like ride past your friends because you have to finish your segment.