So I gifted my 10.5 Pro. LTE to my Mom and for now am considering the Mini 4 LTE as a temporary device until the next gen. mini (or Pro. if the mini line really is dead) is released. Concerned about its performance though with 11.4 since its processor is more than a couple of generations old and it has half the amount of RAM as the current iPads. So to those with the Mini 4 updated to the latest release of iOS; how is the performance?