I have a Motorola Moto G6 phone and today I received a notification for Android Pie 9.0. Before I update to it, I'd like to know if there are any pitfalls? Instability? Slower performance? I use this phone to access work emails via the Outlook app, and I really don't want to upgrade to find out the performance has been slowed down. The update notes "claim" faster application launches. Any input?