I have a GL-AR750 Creta that won’t go much higher than 30mbps. I’ve tried it on 2G, 5G, direct wire. I have high speed, up to 500mbps, but never that high. I did a test on another device right after the Creta and it was closer to 130mbps.
Can you confirm that you are testing with the main router connected via Ethernet cable to the GL-AR750 WAN and your client device is connected via Ethernet cable to the GL-AR750 LAN? That is, all connections are via Ethernet cable.
Note that the GL-AR750 is advertised by GL.iNet to have a maximum OpenVPN speed of only 15Mbps,
The numbers I mentioned earlier were GL on 5G wifi, device on 2G wifi. I just tried cable from main router to GL, cable to desktop, got even less, 9mbps.
Yes, I’m aware of the OpenVPN speeds, I was hoping that Nord was going to work with Wireguard as easy as it did with OpenVPN, but that isn’t the case. That’s not so much the concern anymore, I got a different router for home VPN now. Those OpenVPN speeds work for me on the Mango that is used for public surfing.
It is not surprising that 5GHz wifi is much faster than 2.4GHz wifi. Connecting the router over wifi for both WWAN and WLAN would also have a negative effect.
The speeds also depend on the wifi bandwidth setting. In my urban wifi-congested location, I use only 20MHz bandwidth for 2.4GHz and 40MHz bandwidth for 5GHz., which reduce the speeds even more.
GL.iNet’s advertised speeds are only the theoretical speeds of 300Mbps for the 802.11n 2.4GHz frequency+40MHz bandwidth specification and 433 Mbps for the 802.11ac 5GHz frequency+80MHz bandwidth specification. The real speeds are usually at most 50% of theoretical speeds.