R8500 Wireless capped at 100

Hi All,

I have a 1 gig internet connect with FIOs. My network is setup with a FIOs quantum gateway, a R8500 (Nighthawk X8 AC5300) in AP mode and a EX7000 (AC1900 Nighthawk WiFi Range Extender). The EX7000 is in my office and connected via ethernet cat 5e to my dell XPS computer. The R8500 has a Drobo 5N connected to it. For years the transfer speed between my PC (into ex7000 over to r8500 out to drobo) and Drobo was around 60MB/s (or in task manager 500 Mbps)& rock solid (either upload or download. Then a year ago the firmware changed and I was capped at 10MB/s (in task man 100Mbps). I did a refresh on the R8500 at the time to no avail. I did not downgrade the firmware and since then both devices have had 1-2 new firmware versions.

Two weeks ago I went into the R8500 settings to check and enabled MU-MIMO which somehow was off. Then it worked speed wise for 1-3 days and then reverted back to 100 cap until I rebooted tr8500 & EX7000. I replaced my quantum gateway today and still have the same behaviors. I also replaced the Cat5E between Drobo & R8500.

Anyone see this behavior before? Any suggestions?

Thank,

daniel