@Nagendra 

Make sure the router is running the latest build that can be found here: https://www.tp-link.com/us/support/download/archer-ax6000/#Firmware

If your connection issue is happening on a computer make sure those drivers are updated as well.

You could also try changing the Mode to b/g/n/ac (Advanced > Wireless > Wireless Settings > Click 5Ghz on the top right), excluding ax to see if the issue still happens.

@Tony 

Thanks for the quick reply, I will follow the steps and update. 

@Tony 

I have the same problem with 5G, even with latest FW installed.

My second problem is, that QOS is not working at all.. if I run test on bufferbloat it doesnt help at all :(

@Sparhawk 

For multiple issues I'd suggest contacting our support to run through the problems you are experiencing:

Live Chat: link
Phone: link
E-mail: link

@Sparhawk 

My suggestion contact customer care for quick resolve, because I contacted customer care to resolve the issue.

@Timmycus 

Stil not yet received any solution for the issue, I am waiting from last 4 months but no use. Contacted customer care they will instruct to change the settings in the router and also contacted email support but no use. lost hope on TP-link support now.

I decided not to suggest tp-link to anyone, because paying huge amount and receiving the defected product what is the use of buy the defect product and they are not listening to the customer problem/solve the problem

Already a thread here:

https://community.tp-link.com/en/business/forum/topic/175434?page=15

If your connection issue is happening on a computer make sure those drivers are updated as well. Bt every alternative day facing 5G network problem like in the Wi-Fi I can see the 5G network but. how to control husband in hindi.