ipad pro 2022 automatically switch on wifi6e mode

I use sunshine and moonlight to stream my pc with my ipad, which requires very stable Internet connection. I found that when the ipad is using wifi6e connection, the streamline frequently fail. So I turned wifi6e mode off on the ipad, but after a few days, ipad will switch that wifi6e back on automatically. Even now everytime the streamline cut off, I would suspect the wifi6e problem. Is there any way I can turn that wifi6e mode off PERMANENTLY? REALLY ANNOYING!