There is no solution to your problem OP. Likewise, Apple ruined my 7 Plus when I upgraded to iOS 11 and they destroyed my primary means of interaction AKA the home button. Its the only electronic in my household whose button responds with a delay. Battery life was literally halved from one and a half day to barely a day. I solved it by getting the X. At this point, the real solution is to get an iPhone X or iPhone 8 or wait till someone at Apple goofs up like they did a few months ago when all of a sudden, iOS versions 6-10 were signed for a limited time during which unfortunately I was at work and couldn't do anything.
Try iOS 12 as it comes out tonight and if satisfied with it, once the final version is reached next year, simply download a tvOS beta profile like I did for my iPad. Saves the headache of dealing with those intrusive adware prompts.
Try iOS 12 as it comes out tonight and if satisfied with it, once the final version is reached next year, simply download a tvOS beta profile like I did for my iPad. Saves the headache of dealing with those intrusive adware prompts.