I have a good WiFi plan and speeds are good (i think ) https://imgur.com/a/C8RXFRi

But everytime I search up something on google , reddit or Instagram, it buffers to hard. Like it takes more time to load the google search , only some posts on reddit or Instagram would be visible and others would be blurred or videos would never play. Is there a way to fix this? (Number of connected devices is very minimum - like 2-3 with not so demanding usage)

If I remember correctly, this started to happen after I installed brave browser ( on PC but the WiFi problem occurs on other devices too). Should I change my DNS server address from automatic? Any help is welcome.

Also , I face connection problem while I try to open Valorant with 5GHz band. I would be forced to use 2.4 GHz band so that I could get in-game. Is there a solution for this?

Edit : Now I couldn't connect my TV to internet. It shows Connected but No Internet (Only TV reports this problem)

Thanks in advance!