OpenVPN Server - Client speeds seem capped at 20mbps??

[Futuristic]

Hello Friends,

I have a RT-AX88U Pro (latest merlin firmware) that I setup a OpenVPN Server on and everything is working nicely besides the speed.. My ISP bandwidth is roughly 700/30mbps and my LTE speed on the client (iphone att wireless) is roughly 150/40mbps, yet when I connect to my ASUS router OpenVPN server and do a speed test, I can't get over 21/5mbps. I've tried different ciphers (AES 128 vs 256) and a few different compression settings, but nothing seems to change as far as speed goes. When I watch the router CPU when doing a speed test from the client, it literally doesn't even register any CPU usage, so its not that. I found a few threads describing this same issue, but they are old and with older hardware and there was mentions of CPU limitations which I don't see as the issue here. I've read here that it can do roughly 200/200 with OpenVPN.

Does anyone know how to get faster speed? Is my config setup wrong or limiting it somehow? Here's my config below. Thanks for any help someone can provide!

 

[dave14305]

A download for an external client connected to your VPN server is limited by your router’s upload speed.

 

[Futuristic]

Hey thanks for the reply, Dave. I guess that makes sense. My brain didn't process it that way for some reason. I thought it would be the other way around. Limited by LTE speeds. I appreciate your help!