Thanks for seeking help with slow Wi-Fi on your iPad here in the Apple Support Communities. There are many reasons this can be happening. I am happy to provide something to help you with this.
Once your data is safe, we can explore some reasons that your wireless connection is slow on your iPad. There is a possibility of interference causing this interruption. Please check this help article for some of the causes and possible solutions to this: Potential sources of Wi-Fi and Bluetooth interference.
You may also potentially be experiencing bandwidth limitation issues. To test this, remove a few devices from your network by turning them completely off, or going to Settings > Wi-Fi, and turning the slider off. Then, power cycle your modem and router. Once the modem and router reconnect, only connect the iPad and test if it is still slow.
The last thing I can recommend at this point is to try your iPad on a known good network such as the network at the Apple Retail Store. This does not mean your home network is not good, it may simply be using a different security that is causing the slowness on your iPad.
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