Wireguard very slow in Google Cloud

Asked Nov 11 '20 at 07:45

Active Nov 11 '20 at 19:03

Viewed 610 times

I installed wireguard to my google cloud instance with the same steps on this guide to ubuntu 20.04. I have 100mbps download and 5mbps upload in my home. But when I connect to the wireguard vpn. My speedtest results are 20mbps download and 5mbps upload. But when I make speedtest-cli test on my server the results are 700mbps download and 700mbps upload. What can I do to fix that problem?

Edit It's not just wireguard. I installed openvpn pritunl softether. It's all the same.

edited Nov 11 '20 at 19:03

asked Nov 11 '20 at 07:45

Baran Gündüz YILDIRIM

1

Maybe take a look at your MTU and lower this value as a default. – ppuschmann Nov 11 '20 at 17:13
Have you tried to check via another Internet connection? – Serhii Rohoza Nov 12 '20 at 08:25
@ppuschmann mtu on my server is 1460. But mtu on my android phone and computer is 1500. I set the mtu of my server as 1500. It is still the same speed. – Baran Gündüz YILDIRIM Nov 13 '20 at 10:02
It looks like *@ppuschmann* asked you about MTU provided by your ISP, not MTU in your local network. – Serhii Rohoza Nov 18 '20 at 16:38

Wireguard very slow in Google Cloud

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