UPDATE: I'm finally getting close to 120mbps on the first floor (previous dark zones) by playing around with the location of the mesh device (basically moved it closer to the router and ignored the orange light) and by changing the default 5GHZ channel from 149 to 44. I'm not sure how these channels work but my Nintendo switch was not detecting the 5GHZ SSID and I looked online where some people had suggested changing the channel to anything below 149. I did change to 44 and there it was. It also boosted the speed somehow.