After Oreo my Xperia X is so slow it phisically hurts

[lucius69]

I can't do day to day things let alone do more heavy things like Snapchat. Sometimes the whole System UI gets hang up. Also, the battery performance is awful. Anyone else having these problems?

[schetz]

Quite the opposite in smoothness department

Battery remained on the same levels appx.

You could wait a day in case it's a fresh update, to see if it gets better, but if not too much of a hassle, I'd recommend you a backup->factory reset->restore routine.

I would rather spend a day restoring, than having to bear with slow phone every day.

[nathanhorner]

I don't get how this is causing physical pain - nothing we suggest here can help you there, professional medical help would be best.

As has been suggested about, back-up and reset is probably best.