After Green Island my GW60 watch decided to totally malfunction...must have been too much speed for it

Bought the watch early 2017 so is out of warranty. I've always looked after it. Going to cost $150 for Locosys to check it out and maybe replace it with a 2nd hand one. This all seems a bit steep to me for something that isn't that old and loads of people seem to be having problems with them.
Anyway I invested in a Garmin Fenix 5 late last year (pretty heavy investment too, but love it). Please GPSTC/KA72 somehow work out that we can use these watches to log our sessions.
