I am waiting for the Apple Store to get a replacement in; they were out. They said if the new one didn’t solve the issue it was environmental I.e. something in my house. After reading these other posts I beg to differ.
I have two other IPads, two iPhones and other apple products when the kids come over. No WiFi issues with anything except the IPad Pro.
Saying it is a WiFi issue is a little misleading. The WiFi icon at the top of Safari shows connected and WiFi in settings shows connected but nothing will work on the internet: Safari, Email, Security cameras all do not work.