I have an iPad mini 2 that's still on ios 9.3.5 and I was wondering if it's worth it to update it to 10.3.3 because ios 11 is just around the corner and so far it's a mess on A7 devices. This ipad is mainly used for school and by my gf for movies. So, I want to know how bad is 10.3.3 and if I should leave it on 9.3.5.