Harry Potter: Wizards Unite/YMMV


 * Game Breaking Bug: The game's inability to cope with GPS misbehavior.  The most mild effect from this is your wizard not moving even though you are walking.  However, more extreme effects can occur.  For instance, if you lose GPS and then reacquire it after anything other than the shortest stroll, your wizard will be instantly teleported to your current location.  This wouldn't be so bad, except the game has no "reality check" code that knows that "teleportation" or instant acceleration to hundreds of miles an hour is unlikely at best and adjusts for it.  Instead it screams at you for traveling too fast, and may even accuse you of being in a car.  This can happen even if you are standing still; players have found themselves under an open, clear sky and still see their wizard teleported and flying across hundreds of yards of space without moving an inch.
 * The most infuriating versions of this problem are cases when you are practically standing on a Point of Interest while the game insists you are too far away to interact with it, allowing access to a Point of Interest and then whisking it away halfway through your interaction with it because your GPS trace has moved unexpectedly, or worst of all, moving your wizard on the world map in the exact opposite direction to the one in which you are walking. The combined effect can result in a level of frustration with the game almost enough to cause the player to abandon it.
 * Some players have reported Points of Interest that are perpetually plagued with GPS issues, even though other locations less than a hundred feet away have no problems. Others have recommended "sneaking up" on locations with the game shut down, and then turning it on and quickly making use of the Point of Interest before the vagaries of the GPS signal whisk it away.


 * Back to