Slow AT&T Fiber Internet Speeds Outside of BGW210 Gateway
(Internet Connection: AT&T Fiber/Gigapower 1000)
Home Network is set up as follows: Fiber "translator" box (what the fiber wire is fed to from outside of the homesu10) connects to the Gateway (ARRIS BGW210) via CAT6 ethernet; Gateway is configured for IP Passthrough - DHCP Fixed (with home router MAC address assigned); Gateway has wireless functionality disabled, NAT disabled, and almost all of the firewall options disabled (to not conflict with my router firewall settings); Gateway connects to home router (ASUS RT-AC3200) via CAT6; Home router connects to network switch (Netgear GS108PEv3 via CAT6 (via port 8 on the switch)); wired clients connect to GS108PEv3 via CAT6 cables (two clients - laptop & printer). The home router & network switch have Gigabit Ethernet connections on all ports.
I seem to have stumbled upon an issue with download speeds on devices not directly connected to the BGW210 gateway. I just had AT&T Gigabit Internet installed at my house and I have had the dandiest of times trying to get my devices to achieve as close to 940Mbps download speeds as possible. Whenever I do a speed test (via gigabit ethernet using a CAT6 cable) within the ARRIS BGW210 itself - the download speeds are consistently 930 - 960Mbps and the upload speeds are consistently 700+Mbps. However when I perform a speed test connected using the dedicated Okoola desktop client while connected to the switch - the download speeds drop to between 80+ - 600+Mbps or so (depending on the server). Sometimes it peaks around 700Mbps - but even then it ends around 600+Mbps. The upload speeds, however, consistently remain close to the 700+ mark or so. When I connect directly to the ethernet port on the home router, the download speeds jump up between the 200Mbps - 500Mbps range (but nowhere near the 900+ range
I realize that there's overhead - but is there THAT much overhead to lose THAT much speed on the downlink? Is there a specific way that I should configure the BWG210 to distribute the full connection speed to my router (which then connects to the network switch)? Are there specific (per device) ethernet settings (such as the Advanced tab on the Realtek PCIe GBE Family Controller network adapter) or wi-fi adapter settings that I need to have set in order for the devices to receive the fastest connection speed possible?
Thanks everyone in advance for your help/advice/wisdom/correction/etc