Law, I've taken it in the water, The pool a couple times, used it in the rain, rinsed it off in the sink. I've also dropped it a few times and other than a couple marks on the outside case, it is fine. It has lived up to the IP68 ratings for me. That being said, the GG4 glass on the front is no better than any other phone with GG4, so it would break just as easy if it dropped onto a jagged surface. I found the small raised lip around the screen does help protect it a little bit from a flat fall right on the screen.
I'm disappointed it doesn't have Samsung pay, but without a fingerprint reader or the ability to pay using a magnetic reader, Google Pay does all the same things.
I haven't had much random lag recently. I have observed one thing though, The lag does seem to happen when I am not at home and connected to wifi.
One other complaint, I forget how much free space the phone started with, but I have found the 32 GB to go very quick as well. There is so much bloat on Samsung phones. Like really, I can't uninstall Uber? That's crazy.