We use the matchmaking function, but in order to notify the user of the "number of waiting players" in the queue, we have implemented code to call the GetQueueStatistics API in CloudScript.
But Numbers limit of GetQueueStatistics API requests on an entity can only make per queue within a period of 1 minute.
However, this error will occurs by calling from different users.
In addition, there is a possibility of calling the API several times a minute in the future, so we would appreciate it if PlayFab could mitigate the limit restriction.