ORBI Wifi Speed Drops

Curious how far your Sat is from the Router? I have been on the latest 2.1.2.18 since release. I have had one reboot about 30 mins after the upgrade and have not rebooted since. My internet is 100 D and 5 up wired and I get that same speed on wireless through the Sat. I don't have any Apple devices except a V1 ipad I use for my weather station. My Sat is about 30-40 feet from the router in the living room, Router is in my computer room on the same floor of the house (single story) I have run the QOS stuff a long time ago when they came out and one time since upgrading my internet from 50 meg to 100 meg and really done nothing else. When I see flutuation of speed in my wireless its normally dropping to no less than 85 D and 5 up and then comes back a few tests later to the full 100 D. I do have about 30 devices connected 2/3's are wireless camera's, tablets, phones, printers etc. Could it be a distance thing with the Sat possibly or another floor the Sat is on that is weakening the signal and degrading the speeds?