Hi, I am using an Archer C5 V4 model provided by ACT. I have frequent wifi disconnection issue with 5GHz band. I did a bit of google search and found that the same model has got the issue in the Russian version and there is a fix provided in the form of a firmware update. Refer link below:

https://www.tp-link.com/bg/support/download/archer-c5-v4/

Can you please do the needful for the same in Bangladesh as well.

Note: The model I am using is Archer C5 V4 and this community page doesnt even list this product.