Loosing Wi-Fi Connection Samsung Galaxy Tab S3

[#1]

My tablet has started to loose connection on Wi-Fi.

I have reset the the wi-fi 3 times this morning already, Twice using the WPS and once entering the code.

When watching you tube you can get halfway thro a 30min video fine then bang wifi lost, when you look at the wifi networks available mine is saying "Authentication error occurred" 

So to find where the problem was I connected my friends Huawei M5 and the same problem occurred.

Don't understand why these problem are not happening on my other wifi products thou.

Any advice would be great help................................ 

[#2]

Separate the 5 GHz and 2.4 GHz in your router  is a start. 

[#3]

Sorry forgot to add in my post above,

I have std internet not fibre and use the following router,

Technicolor 582n - ADSL2+ / ADSL2 / ADSL

[#4]

Hi @easymoney999 

What WiFi channel is your router currently broadcasting over?

Can you take a look here and follow the steps regarding changing channel then let us know how it goes? #

Thanks, 

MoR