Gl inet MT3000 Beryl AX Wireguard VPN Capped at 10mbps

Hi all,

I am using two Gl inet MT3000 Beryl AX rounters. One is setup as a server, and another one is a client. My provider is Spectrum. My modem shows speed is 30Mbps Down & 10Mbps Up and with wireguard server its 200 mbps down and 10mbps up. With wireguard VPN enabled my speeds are capping out around 9 to 10 Mbps. I need help to increase the speed. Is there something wrong with my setup? Please help!

Thank you!

Try changing MTU to 1280

sorry im a noob here. Where can i change MTU at? on my gl inet router or home modem ?

I just tried changing MTU to 1280 on both routers still max at 10mbps

That is as good as Spectrum will do for you.

Beryl A: Server, download speed is 200, upload is 10.
Beryl B: Client, download 30, upload is 10.

Traffic from Beryl B to Beryl A is capped at 10, because that is as fast as the ISP will upload from Beryl B.
Traffic from Beryl A to Beryl B is capped at 10, because that is as fast as the ISP will upload from Beryl A.

Ovpn will be the same.

Spectrum offers a 500/20 tier, I think, for around $20/month more, and a 1gig/35 for $40 more. So for $80 a month you could get to 35 one way and 30 the other. Until they do high split in your area, you are stuck, unless you can change providers. Depending on your location, you might do better with two Tmobile 5g home internet solutions.

One thing you might try is to only send site to site traffic over the tunnel, and everything else outside of the tunnel. Then from the server location you could download from the internet at 200mps; from the client location you could download from the internet at 30.

Another thing would be to use the client location only to RDP into computers at the server location. The computers there would download at 200, but the RDP traffic would be a small fraction of that, so it would feel that fast.


So in this case, am i gonna get the same speed result if i use my a SFT1200 Opal or Slate AX?

I think so, though the Opal might struggle with openvpn as it is only rated at 12, at least until DCO is implemented.

I have a similar IP uplink speed restrictions at a family members house that let’s me use their place for one of my VPN servers while I travel around the world, so I installed a cheap AR300m as my VPN server. The AR300m is tiny, uses very little power, and can serve data over Wireguard faster then their service can provide.

I only use this VPN when I need a residential IP address. I use a cloud based system for my VPN when I need speed.


Oh yes. I do the same. Those AR300-M are just awesome still today.


Thanks for the reply. So which vpn service do you use? i prefer to use wireguard with locations to choose from. Any recommendations are welcome! Thanks!

I don’t use a VPN provider, I rent some cloud VPSs and install Wireguard and SoftEther, and setup my own VPNs, so I have full control of my VPNs.


do you have a tutorial to do that? much appreciated!

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Sorry, I have never written an external document on how I do my setups.

Something to get you started, on oracle cloud but others will be similar:

I guess I should add that this doesn’t get you more speed site to site, but is of more use if you don’t have a public IP address to reach. Each site connects out to the cloud site, and to each other through the site. But you are still limited to the upload speeds on each side.

The free tier OCI instance gets you 500/500. The priced tiers vary, but very quickly get you to 4G/4G. But for OCI you are limited to a particular region; if you choose Frankfurt, for example, you can’t geolocate yourself to Australia.


Oracle setup is pretty complicated, and do not allow P2P even if done accidentally your account will be locked, the free tier throttles down to 200Mbps on sustained usage.

I do not recommend using a VPS for VPN if privacy is a concern, for geo-blocking and P2P it’s fine, Vultr is very easy to get going.