With the A9X chip, the processor in the 9.7 Pro should be plenty fast for IOS 11. Something else must be going on there. Resetting and reinstalling IOS 11 is exactly what I would have done too if it started to feel sluggish (assuming that’s what you mean by not running very well). Should be solveable.
[doublepost=1517099247][/doublepost]Maybe take it in to an Apple Store and have them take a look. They’ve got diagnostic tools to check out and identify any issues. It‘s usually no charge. I’ve done that as well, and they always solve the problem.
iOS 11 is definitely slowing down my 9.7" iPad Pro as well. In 2016, I was able to load a 45-page script in google docs, refer to it on stage, and make edits to it in real-time and the whole process was as smooth as butter.
But something changed with iOS 11. I was asked to reprise my role as emcee again last year, and the same document was barely running on my iPad. Forget about editing - the entire experience was so slow and laggy, I just plain gave up. It could be google docs acting up on their end, but in the end, it was a glorified document viewer.
Battery life is also noticeably shorter, but that could also be it being almost 2 years old at this point (and I do use my iPad pretty heavily at work). Everything else still works as it did, and maybe I am being a little oversensitive here, but everything just seems to take a tad longer to resolve.
Maybe it's the 2gb ram beginning to show its age, but I shudder to think how it will react to iOS 12. iOS 11.2.5 seems to have made it a little smoother though.