@Komalme UPDATE: TP-Link support sent me some work around via email after creating support ticket. One of the solution worked like charm. I changed my DNS to 8.8.8.8 and voila, everything is working...

@David-TP Yes, Prime Video app works well on LAN wired connection to TV. Tried 2.4Ghz and 5Ghz in individual modes (both, one by one) but app doesn't work in either mode. Prime app works well on my...

@David-TP just tried your idea but still same issue. It just doesn't connect.

I am getting 175 Mbps from Deco. Yes, my TV connects to 5Ghz network. @ImtiazAli

@ImtiazAli It can't be prime video app issue. it works great on other router network. there is no option to clear cache etc. on webOS tv for the app. I already tried uninstalling and reinstalling.

My webOS LG C8 tv is with latest firmware and latest version prime video app. Prime video app throws error ‘Network issue’ when connected to Deco M4 wifi network. All other streaming apps work...