@synchronix What router are you using? You want to keep the 2.4 ghz separate from the 5 ghz network, we run into a lot of issues with blended networks. I would also suggest you make sure your firewall is set to low and that your MAC filtering is off.
We also see improved success if you swap to Google’s public DNS settings. 188.8.131.52 and 184.108.40.206
Give these a try and let me know how they work out!