Firmware release V2.40 found bugs to be squashed

Same issue here (but on a f5). It appears fine on base camp but on syncing to GC only the first half is recorded.

I refer to your recent enquiry concerning the above.
If you have examples in regards to any queries with the GPS please send in some links from your Garmin Connect in order to allow us to investigate further.
If there is anything else I can help you with then please let me know.

Hello,

-link removed-

This one, the latter part of the walk is completely missing.

-link removed-

This one, a line goes through a bunch of buildings, it’s completely inaccurate. Both faults happened after clicking “resume later” and resuming the activity.

I don’t believe there is a solution. Either my watch is faulty (unlikely) or it’s just a software bug (more likely.)

I refer to your recent enquiry concerning the above.

I would recommend changing the data recording t every second to ensure as accurate readings as possible. Please refer to the attached suer manual for these instructions [Page 24]

http://static.garmin.com/pumac/fenix5x_OM_EN.pdf
GPS drift is caused by many external factors and consumer grade GPS devices cannot account for these. GPS drift causes the device to appear to be moving on its own. It is most obvious when looking at a track or when zoomed in all the way while at a standstill.
Satellites send their signal through the atmosphere down to earth. The atmosphere distorts this signal, and other environmental factors (such as trees, hills, mountains, buildings, cars, reflective surfaces and more) can further degrade the signal.
In the past, a satellite signal weakened by the environment caused a loss of position. High sensitivity chips were created so that it was no longer a question of if you had a position lock, but how accurate that position lock would be.
Now only the weakest signal prevents the device from locating your general position, but as a result, the decrease in accuracy that is introduced by the environment causes GPS drift. In other words, the device is more sensitive than the environment allows it to be accurate.
Being mindful of the limitations of consumer GPS devices will help alleviate concerns regarding their accuracy.

In the first link it was already set to record every second and a GPS lock was engaged, but the latter part of the “walk” is simply non-existent.

In the other “walk” where it looks like there’s a GPS drop, the watch showed the GPS signal was fine, and again, it was set to record every second. If it was not recording every second, then that’s another bug with the watch because I’m quite emphatic about having it set to record every second.

My Garmin Fenix 3 Sapphire watch had absolutely no problem with the exact same route. Moreover, my Garmin Fenix 5x has no problem with the exact same route when “resume later” is not clicked.

It is a bug with the watch.

Two structured workout bugs:


2. Heart-rate based alerts do not work during a workout downloaded from Garmin Connect. When I set up a workout step with a custom heart rate zone, say 60-140bpm, the step displays the limits for a short period of time but there is no alert when you go outside the zone.

Is fix with Beta 2.72. i did double checked

AHA!

It's GARMIN CONNECT! Under devices settings the vibration and tones settings are off by default so when you'r watch syncs its sets them off again!

Go into GC and turn them on and sync and it'll all be fine again!