Hello guys. Any of you with mi4c have problems with push notifications? (Whatsapp, Viber, messenger) They arrive with an average latency of 2 to 15 minutes. This is not happening every time. I really can't find any pattern. I already have the correct settings (autostart, lock in memory, allow popups, custom battery profiles to allow connectivity in background) but this drives me crazy. Any thoughts? I'm on latest Developer btw.