D5300 GPS problem

[RocketCowboy]

Whatever it is, I can tell you it *definitely* improved the GPS performance of my girlfriend's D5300.
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I agree. It definitely improved the GPS performance on the D5300 my wife is using now too. It does need to be kept current though, but possibly not every 14 days. It's a gradual skew, but will drift back to the slow acquisition time over the course of a couple months from my experience.