The most common complaint I get is the TV in the Lanai buffering. This is usually because the WiFi signal also degrades when going through glass as well.
Be aware in a stick built home the WiFi signal will easily travel through the walls of the home and you will most likely get full coverage with only one device. With tilt-wall cement and block homes the WiFi signal degrades sometimes significantly when going through each wall or combination of walls. This is why you want to place the WiFi device as high as possible so there are no additional obstructions like a refrigerator or other appliances.
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