you may contact tp-link directly . share us any new update from them. Steve7001 wrote For US/Canada V1 is still 2017-07-17... which as JiiVeeTee noted is before the KRACK vulnerability was published...

it is hard to tell that the issue is caused by the built-in wireless adapter. i think it is better to buy a wifi adapter from a shop that can provide 1 week return even the box is open so after you...

update the driver of wireless adapter on your laptop. did you enable mac filtering in your router?

can other devices connect to router 5ghz fine? is there an ip address and gateway on your pc? can you ping the gateway and 8.8.8.8? what is the operating system of your computer?

you put the correct ip address of ps4 in the router DMZ settings? did you reboot router after that? you can contact tp-link support maybe they have better suggestion.

can you try reset and firmware upgrade?