Alright. Before I do this will me changing the channel of my main router affect how the other devices on my router work? will I be causing problems for others if I change the channel? Also how can you mark your solution the best if we don't even know that it worked? I'm sure you have experience but all situations are different so you can never be 100% sure. Just thought I would point that out for you.

@Jangford02 

Good day.

Changing channel would not mess up the connection of others.

And the suggestions listed above are the most common-used trouble shooting methods.

The best solution could be updated once we find more useful ideas.

And later if you fix the issue by yourself, it is highly appreciated that you could share your experience here.

Thank you~

@Kathy_Z 

Thank you. I will look into that and Asa I either figure out the solution or the solution you gave me works I will say something.

I just thought it was odd there was a best solution already nothing out of hate just was curious. I know of some websites that usually wait before the best answer is chosen so to see that was new. 
 

Thank you for you assistance. 

@Kathy_Z 

So I have tried everything you gave me and i'm still having problems. Whats the next best thing to do?

@Jangford02 

Good day.

Sorry for the delay.

Please check your email box and We would like to forward your case to our senior engineers for further assistance.

Thank you very much.

@Kathy_Z 

So after a senior engineer couldn't help me with the problem I went and bought a usb network adapter to see if maybe it was the device itself. 
I just received it yesterday and after installing the drivers I plugged it in. I used the new WiFi adapter for 4 hours no problems. Swapped back to the archer T4E, had problems.
In the end I conclude that there was something wrong with the archer T4E itself.
Thank you to all who helped me to figure out the problem.

I was having this issue and I think I was able to get rid of it, so I'm leaving this message in case people find this while googling for a fix.

Downloading from Steam and other long downloads disconnected my internet, I've tried to fix it reinstalling the drivers provided in the product page here https://www.tp-link.com/us/support/download/archer-t4e/#Driver.

I've pinpointed the issue to the network card when I routed my internet through my phone by USB, and it did not present the issue.

Then, I've found this thread, and installed the driver supplied by Kathy_Z in a previous reply, here is the link again: https://static.tp-link.com/2019/201911/20191128/T4E.zip
 

When selecting the .inf file from WIN10X64 (my windows version) through the driver update window, I am presented with a list of drivers. With that, I've chosen "Wireless ASUS PCI-E Adapter". I've chosen this one because this is the name that appears when you search Google with the hardware ID from this card (which is PCI\VEN_10EC&DEV_8812&CC_0280).

I thought it wouldn't work because the driver date was 2016. However after installing this driver I couldn't reproduce the issue anymore. Hopefully this means it won't occur again the future.

This is what it should show up in the Driver tab when going to Properties in device in the Device Manager.

@joaopslins 

Hi, glad to hear that the public driver helps. ^_^

@joaopslins 

You absolute legend, thank you!

I was having the same issue on my Archer T4E (TP-Link AC1200 Wireless Dual Band PCI Express Adapter) and no other fixes were working.

The issue only started happening around 2 months ago - I'm not sure what caused it, a Windows update maybe?

But sure enough, using the ASUS Wireless PCI-E Adapter driver from the T4E.zip worked like a charm!