The multiplayer of this game almost made me want to hate this awesome game, but that was because I was stupid not to search anything about a fix. Well, that's okay, this may or may not be well-known, but here are possible fixes for the freezing experienced while playing multiplayer. This is working for me so far, so I figured I should share it here at least, since I have yet to find a guide for this here.

While this is working for me, I do not know what happens to the system in general so there's that. Then again, I haven't experienced anything different so I reckon it's harmless and safe. Mileage may vary though, don't blame me for it. Blame the devs.

1. Open Start Menu, and search for Services and run it.
   * Pressing Win + R keys to bring up Run window, and opening services.msc does the same.
   
   

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2. In Services window, scroll down to Peer Networking Grouping entry
   
   

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3. With this setting, Right Click on it and hit Start.
   
   

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4. Afterwards, with the same setting, click on Properties. Under the General tab, change the Startup Type from Manual to Automatic and click Apply and OK
   
   * Changing both of these settings should change the Status to Running, and Startup Type to Automatic in the main window.
   

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   You may restart your computer after changing these settings to try and see if it worked, but I suggest you just proceed to the second fix instead.

1. Search for Command Prompt and Run as Administrator.
   
   

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2. Type in these commands in order.
   

   netsh
   int teredo
   set state disabled
   
   int ipv6
   set teredo client

   * Doing those should make the CMD window look like this
   
   

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   And that's it, just restart your computer and the multiplayer should work fine now.

The internet and some random Youtube video