So I've been having an issue where my iPhone X will be connected to my wifi network and then it would either drop connection or just not connect. I would wake the device and it wouldn't be connected to wifi. This led me to burn through a lot of data as I didn't realize this was happening, cause it would either be connected and using cellular or I just didn't pay attention. So through trial and error I disabled "fast roaming" on my router and now everything seems to be working ok again.
So if you are having issues with wifi and have a mesh network, make sure fast roaming isn't enabled, at least for now.
So if you are having issues with wifi and have a mesh network, make sure fast roaming isn't enabled, at least for now.