Intro:
I'm no fanboy, so please try to be unbiased.
I've been STUCK on the iPhone b/c my ENTIRE FAMILY AND EXTENDED (both sides) have it. We use photo/vid sharing and iMessaging a lot. I'll never feel like I have freedom. I wish I could break free, but I probably can't, so as usual I have to stay with Apple yet again (not that I hate the phones themselves).
Scenario:
I have an iPhone 6S Plus. The game kicked major butt (it was near flawless and played MCOC extremely smooth and fast) until I moved to iOS 11. Now, I have had enough problems to the point where I'm willing to just get a new phone. I'm torn between the 8 plus and the X. If you have a solution to my above problem, then I'd look at other brands as well.
Hope to have some valid input here.

P.S.
Common problems with iOS 11 are choppiness and game needing to completely reload after I minimize it even for 5 seconds.
The choppiness is unbearable when running map6 in a high prestige alliance. I'd never used more than a few items, but my last run of map6 I used 14 items!! Basically, the phone would get choppy and would ruin an sp2 evade... one sp2 could mean insta-death in our AQ runs of map6.