SageBrush
REJECT Fascism
I was thinking about that, but @focher may still be correct. Even though your wireless device supports both frequencies, it may not do so optimally at the same time. In retrospect we could have asked you to turn off the 2.4 GHz radio in the extender (if possible) and then check speeds.Thanks very much. My Netgear extender had both 2.4 and 5 ghz radios.
Regardless, you have a much better network now
@SpudLime floored me when he posted that he has 32 devices connected in his home. That is a lot of home functionality dependent on one piece of equipment, one internet connection, and one ISP. We are going to need to design some resiliency into our home networks soon.