We have an iPad mini 2 running iOS 9. Ever since upgrading, any text field in Safari is painfully slow, generally taking 2 to 4 seconds before responding, and then doing so in fits and jerks. This does not appear to happen anywhere else that I have seen.
I'd like to fix this, but I'm not sure where to start. There do not appear to be any Safari extensions, so it seems to have something with the Safari install itself. Is there any way to do a clean re-install Safari.