1 gig speed

The speed of a device connected to one of the satellites will be affected by two factors:

1. The backhaul link between router and satellite.
   Although the product data sheet claims a 'maximum possible' link rate of 1733mb/s, there is a reference (in tiny type) to a footnote explaining that this is only theoretical and not likely to be experienced in real world conditions.  I have three satellites connected to an RBR50 router, and none of them report a link rate over 900mb/sec.  WiFi has significant overhead that reduces transmission rates even further.
2. The bigger factor may turn out to be the link between satellite and device.  86mb/sec is suspiciously  like "under 100mb".  In other words, there is a distinct chance that the cable linking satellite and device or the device ethernet card max out at 100mb/sec.
   Unfortunately, Orbi satellites do not report the status of ethernet connections, and the actual ethernet jacks do not contain LEDs to indicate the connection rate.

I suggest two tests:

1. If at all possible, connect the device directly to the Orbi router using the same ethernet cable and look at the Orbi web interface, Advanced Tab, in the box labeled "Internet Port" click on the blue section "Show Statistics".  If the LAN port that the device is connected to shows 100/Full rather than 1000/Full, then the device/cable are capable of only 100mb/sec.  In that case, achieving 86mb/sec is reasonable.
2. If that is not possible, exchange the ethernet cable for a new Cat 6 ethernet cable and see if anything changes.

There is no practical way to get anything close to 1G/sec on a satellite. 700-800mb is possible.

Hope this is helpful.