Need to be further away from your router, like outside or in the garage?  The 2.4 ghz network will allow you to pick up wireless signal farther away from your router but with less speed, i.e. 70-80 mbps in the garage, yard, etc.

Are your streaming services buffering? The MLConnect_5G network is best for smart TVs, laptops and other streaming devices because they are closer to the router and can handle the demand.