Current Network speed is much lower then previous mesh systems.  I  currently have a fiber system a with no router, the XE75 is setup as the router.   Devices with in 6-8 feet are buffering on a regualr basis.  Fiber to XE75 via cat8 cable and from the XE device back to a switch via cat8 cable.  Nework speeds from different computers are being test with speedtest.net and is reported ~ 300MHZ to 650MHZ. Each computer on the network  is wired with Cat6 cable and previous setup had (950Mgz+ during heavy load nights).  The wifi is not handling the devices ~15 and the cvoerage seems to act like it pulsates the signal at times when chekcing with wifi app on phone.  What can cause the XE75 to run this slow?