How to improve backhaul status for RBSE960 satellites

Other than physical location of the RBSE960 satellites in relation to the RBRE960 router location, are there any specific settings on the router that might improve backhaul status on the satellites from Poor to Good? I have read other posts on this forum about router settings that might make a difference, but I can't seem to find any of those options for the 960 series router. Both my satellites are further than 30 feet from my router - perhaps 40-45' for one and another 20' away for the second one. That,of course is as the crow flies, assuming a crow could fly straight through several walls, lol. Both satellites show backhaul status of Poor nearly all the time.

Hardwiring the satellites to the router or each other is not an option in my case and neither is changing the location, so given that, would adding one more satellite perhaps closer to the router, have any effect on improving the backhaul status for my two existing satellites?

Thank you.

Ric