Problem with Wi-Fi, android phone

Hello,
I have problem only with android phone, and I dont know how to solve it.
Most of sites open very slow, and often crash when opening.

In log I have this, and that repeat all day.
My windows phone dont do that and work fine.
mikrotik.PNG
I must mentioning that this phone have problem only with mikrotik, on other wi fi routers or APs works perfectly.
Problem is because this android phone is my wife’s :smiley:, and I must solve it, or she will gift my mikrotik to someone else :slight_smile:

I dont have problem on mine RB2011 with LG F60 Android smartphone. What is your wifi configuration? Paste here configuration? Do you tryed to change frequencies?