Orbi AX4200 on a Fiber vs Cable connection

The cable modem was an XFi Advanced Gateway that comes from Xfinity.  Yes, the Fiber modem WiFi is turned off.  I wouldn't say I have an issue with the modem fortunately since the Orbi is getting full strength at the source with no problem and I should mention WiFi speeds are equally strong right next to the router.  Its just that I get slightly less download from the Arris/Fiber as I get farther away from either the main router or Satellite. At long range the gap is around 20-25% difference.  There actually may not be anything wrong at all if its true that the Orbi logic is just handling things differently in an attempt to optimize both up and down speeds.