Is it just me or have other people had the issue of you location jumping around. I could see how it could be only an issue with my hardware( I do have an iPhone 7). Just putting it out there.
GPS is always a funny thing. have you tried to flush your AGPS status and update it?
Where is that located in iOS?
Don't think you really need to do it on iphone... i think the closest thing you can do to flushing is going to settings/privacy/location services/*scroll to bottom* system services and turn everyhing off then everything back on
The infamous drift
Sometimes it can be helpful.
Yeah, this happens quite a bit depending on your connectivity to a network (WiFi, Cellular towers, etc). Some times it is helpful when you need to move a square over but the river is in the way or something.