I have 2 2XLs and we haven't turned them into daily drivers yet because Android 12 may be on the cusp and I really don't feel like setting up 2 phones if I have to format data
Since we don't heavily use the phones yet, I've just been keeping them updated every few days (magisk, ROM, and Play Store updates). I noticed that internet does drop from time to time. Sometimes I have to Airplane them on/off to get it back and sometimes I have to reboot the phone. Since it happens with both devices (latest build 202111008-0807), I think we can rule out hardware. I only have gapps, Battery Charge Limit, AdAway (from Fdroid), and Magisk installed... no other apps
I don't know when this started but since you mentioned WiFi issues, I wanted to see if anyone else experienced this