WiFi or even the wired port communication dropping has NOTHING to do with the ISP. And if your router is working with ALL other devices... the only issue is at the TV/Roku. We have many TCL Roku TVs throughout our location, we control ALL of them via network control via the documented API... and ALL of our TCL Roku TVs are NOW have issues. The TVs drop the network connection after power off, and WILL NOT power up via the network connection (WiFi or wired). We have to send someone around with the IR remote to turn on the TVs. Once the TVs are power up, we can remotely turn them off, and even on, if we d it within a few minutes of power off. But once the TVs have been power off for more than a few minutes, THEY NEVER RESPOND AGAIN to any power on command. This is A SOFTWARE issue, in the code that controls the network connectivity, effectively times out, and drops connection. We recommend equipment to MANY people given we are a Audio/Visual media group. And all networked TVs have quirks, but these TCL Roku TVs... never recommend these again, until they get their software control working RIGHT AGAIN.