LG G3 Wifi Connection Issues This started like a week ago, my phone wont connect to my WiFi properly. 

Issues:


Unable to locate my WiFi (it cant search/ find my WiFi)
'Authentication Problem' shows when it is connecting to the WiFi (there is another one I can't remember)
States that 'Internet is unavailable' occasionally when it connects
It will connect to WiFi for like 5 secs before dropping again


In the beginning I thought my phone had lost its WiFi range as I would just walk into my office (where my router is) and it would connect, now that is not the case, it is a mixture of the above issues usually simultaneously occurring. It isn't a router issue as my other devices work flawlessly.

*My router emits 2 bands of WiFi (2.4 and 5 GHz) and I've tried using both.

I've tried:


Restarting both phone and router
Toggling airplane mode, WiFi and Battery Saver
Deleting apps prior to the problem


This seems like a common issue within the android community, and I've searched relentlessly for a fix (permanent rather than temporal). If possible I would prefer to not have to factory reset my phone.  

Thanks for all the assistance.
I have the same exact issue. Literally same exact issue. I got mine to work for a little while after setting my WiFi to broadcast B&amp;G only. I really hope someone finds out how to fix this issue soon. Btw I'm running XDAbbeb's ROM and have tried 3 or 4 others.

Edit: People on the G3 reddit are reporting this issue as well. One user said that replacing the battery fixes the issue.