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H4X0R46's avatar
H4X0R46
New Contributor
6 years ago

Slow internet speeds after installing Hamachi

I've been having this issue for so long now! For some reason, my internet is blazing fast until I install Hamachi. Certain website downloads are affected but others aren't. for instance, downloading ...
  • oyvindhauge's avatar
    oyvindhauge
    5 years ago

    Try this to check the status of Receive Window Auto-Tuning Level

    netsh interface tcp show global

    and if it is disabled, turn it on with

    netsh interface tcp set global autotuninglevel=normal

    This helped me and two mates. The settings need to be run with admin rights cmd  (and shift+ctrl when you run it).

    As far as we understand it you would most likely want Receive-Side Scaling State enabled as well.

    netsh interface tcp set global rss=enabled

    We have not tested Hamachi after changing these settings. Nevertheless, just wanted to share because this problem was making us crazy.

H4X0R46's avatar
H4X0R46
New Contributor
So I'm not the only one! Yeah I tried EVERYTHING to get my speeds back, I finally got frustrated and reinstalled Windows on my PC, and found an alternative for Hamachi. I will never use Hamachi again because of this issue that was only fixed by a clean OS install. Not sure if I'm allowed to mention what I use now, so message me if you're curious :)
Cykr1L's avatar
Cykr1L
Active Contributor
5 years ago
What alternative did you take?
So... I guess I have to kill my system too 😑
  • H4X0R46's avatar
    H4X0R46
    New Contributor
    5 years ago
    Yeah it's a real bummer! I tried to talk to support and they just tried to convince me it wasn't Hamachi doing this -.- Alright I'll just say it here lol I switched to Radmin VPN after restoring my system, never had a problem after that! www.radmin-vpn.com
    • Cykr1L's avatar
      Cykr1L
      Active Contributor
      5 years ago
      Yeah... Like you said. Did last night a clean install and use radmib VPN now.
      Everything is just fine now!

      Thank you bro, you helped me a lot.
      A repair install didn't work for windows.

      So you really need to install the hole thing from the beginning