I've upgraded from Apple TV3 to 4. There's no changes with my set up, same modem, router, computer, etc. According to my Apple TV4 settings I'm getting 4 out of 5 bars in single strength, same as before. However streaming on Apple TV4 has thus far been horrible in all apps that stream video. The video keeps starting and stopping, constantly buffering, the video quality is pixelated. Some apps won't stream at all. Basically unwatchable. I've tried typical solutions like unplugging the modem and router, restarting Apple TV etc. That's not fixing the issue. Are there any settings to improve streaming? Other than reduce video resolution. Why the problems with the 4th generation when I hardly had streaming issues with the 3rd generation Apple TV? Do I need a new router?