RoystoysNot entirely true, while A11 does perform similair after some fixes from google and should perform very very slighlty better than A10 at this point. The problem still lies in the way that android is installing an update. When updating from a previous version to a newer one, it easily happens that suddenly you experience weird performance drops here and there because the update mechanism of Android is quite bad causing stupid bugs all over the place. Generally it's recommended to do a complete factory reset when updating to a new android firmware, if it is still lagging, then there is something wrong as the Zenfone 7 is by no means slow nor that A11 is even that much different from A10. So if the OP resets his phone and then still has the bugs, then there is clearly something wrong with the actual A11 firmware.
So full of it I can't believe my eyes . every time someone updates their phone they can expect a decrease in performance. My god Google shut him down before someone actually believes he knows what he's talking about