Hi I owned more than 8 apple products in my household, having this WIFI problem since 6 months ago, never really have the solution. I love apple product but now I have decided to switch to android for more stable WIFI connectivity.

I have the similar issue for the WIFI stability after update to IOS 14.2 and later 14.2.1 ( iphone 12), my iphone 6S also facing similar WIFI stability issue after update to IOS 14 ( very much regret I did the uodate :((( ) Due to this WIFI instability, it is getting very tricky when doing the secure transactions (example banking), as the OTP or the 2FA identification is not able to receive on time or completely no authentication. I called Apple support three times, no concrete solution for the problem !