Can someone try System Settings > Wi-Fi > Advanced > Keep Wi-Fi on during sleep to Never (increase data usage). After half hour or hour under my AP i connected say DISABLED and when i connect to another AP say DISABLED again than i have 2 Disabled AP. Reboot phone and working normally again until phone goes to sleep again for longer period of time.
Keeping Wi-Fi to Always on i don`t have problems.
And Can someone try Wi-Fi tethering. I got instant soft reboot when press on Tethering.
Everything else working excellent.