When I drive around in a car with friends or sit at a Pokestop with lures, Pokemon don't always appear for me. All my friends seem to get Pokemon popping up, they end up having to tell me so I can restart the app and get them to show as well.
Also when we drive around, my character sometimes runes off from the path were going, while theirs run perfectly straight. so I pretty much cannot play the game other than sitting at Pokestops and restarting the app every 3 minutes.
Why is this? It is extremely annoying and is only happening to me. Any idea why? I have a iPhone 5s.