Recently cut the cord on cable and have 40 mbps ATT internet. We have little to no issues running Netflix/PS Vue or Google Chrome Cast on 3 TVs in the house. We use the ATT supplied router but also have a 6 year old or so router on stand by if needed. I cannot get a signal to be able to watch tv on the porch.

Do I need a new router or a range booster/extender? Something else?