@kytta @tswsl try turning off 5ghz wifi. I have a tplink vr400 and the 5ghz wifi on it causes all sorts of connectivity issues. What's wild, and I totally don't understand why this is, but the majority of my raspberry pi's (at least 11 of them) will play nice with a freshly turned on vr400 but after about 15 mins it starts dropping and disappearing. Only if the 5ghz side is on.

As soon as I turned off the 5ghz side, everything has run just fine since. I have no idea why.

Another thing I was told that might help (but didn't help me) was to turn off WMM in the router settings. This actually increased the amount of time my pi's would initially stay connected until they inevitably disconnected anyways.

I really hate these routers, they have some really amazing settings for being first party, but they have really weird quirks, and this quirk seems to be the most frustrating overall.

Ps.