Some reasons and solutions for slow iPads are listed here:
1. Having a lot of applications open – Quit apps you haven’t used in a while.
2. Storage shortage – Look into whether your iPad is full of data. Remove any apps or files you do not need anymore.
3. Outdated version of iOS without updates– Always try to install the newest version of iOS.
4. Try to stop apps from updating on their own by turning off both background app refresh and automatic downloads.
5. Many notifications – Prune those that could clutter your system.
6. At times, the solution is as easy as restarting your iPad.
If you want more specific directions, please ask!