I would recommend 6 Mbps minimum
For us Verizon DSL users getting 2.5Mbps I guess it’s an unattainable dream.
I just watched some Amazon Prime documentaries last night in my bedroom. It is too far away from my WAP to get a good signal—I used my phone’s Internet sharing.
The picture and sound were perfect.
I intend to run some cable through the attic to hook up another WAP in the bedroom area. I’ve tried a bevy of range extenders, and they tend to need setting up again each time I loose power. I put an UPS on one, but after an hour, the UPS shuts down. If my power outage lasts too long, it still whacks the configuration of the extender.