sometime my Wi-Fi lost data even the connection is still on. I'm using Franco kernel r32. I don't know how to fix it. Can anyone help me to solve this problem?

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Google Nexus 5 32GB White
CWM+rooted
stock ROM + Franco r33 kernel
dalvik+bionic library optimization
Xposed+APM+GravityBox+NotifyClean+Greenify
disable fast dormancy
KRT01B Radio (Radio 4.4.2 suck)