I’m also getting a similar problem on my Moto G (see: https://www.waze.com/forum/viewtopic.php?f=55&t=86200
As I’m new to both Smart phones as well as sat-nav gear, I’m not sure where my phone knowledge/signals cross over my WAZE knowledge/signals.
Before trying waze I used the in-built sat-nav.
This is great, apart from it robs me of my phone balance. I am now disabled and use my phone on payg, so need to keep an eye on its use.It also uses proper satellite images instead of drawings.
Yesterday I kept losing signals along the main A30 (UK) – no trees or buildings to block signals.
Before seeking an alternative system, I’d like to know what’s happening,,,, & if it can be fixed.