ORBI Wifi Problems

Thanks for the offer to assist.  It has been a long two year battle troubleshooting.  I've tried various routers, distances, locations for devices.  The two story is wood frame w/stucco exterior.  The orbi and sattelite are currently on top of each other floor-wise, but we've tried various locations.  The main orbi and cable modem (Netgear CM600) are aprox 10-15ft from area where all of our primary wireless devices and xbox are.  Currently on latest firmware.  It's a 1700 sq ft house.  Problems with various devices, and internet issues are intermittent and vary.  We have quite a few devices, but nothing that isn't standard for a household these days (4 cell phones, xbox, wireless garage door, wink hub for lights, 3-4 PC's.)  We had 200mbps and gig, no difference.  I think we are back at 200mbps now (because it didn't help).  Wireless speeds vary of course, but are not near what they should be.  We game a lot... various games all have issues.  It was fun troubleshooting that because of all the variables, but there is one constant in all of them....Orbi wireless.  Wired connection doesn't seem to have the same issues.  And a reboot often tends to work for a few days.  It really shouldn't be this difficult.  As a fairly tech saavy consumer with no more time or patience to troubleshoot, I'm just looking for a recommended wireless setup that is more reliable.