Fenix 5 plus crashing

For the 3rd time now my Fenix 5 plus has crashed part way into a run. Everything seems to be going fine, and then I get a blue triangle icon for a minute or so, then there is a couple of more minutes with a message that "maps are loading" and then once it comes back to life it resumes my activity in progress. My watch is just over 2 years old and this seems way to soon to be replaced!