Ultra Street Fighter IV

Ultra Street Fighter IV

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Wootles Jun 1, 2014 @ 9:53am
Hey guys, sorry for the all caps title! This is for anyone who is experiencing lag over the P2P connections in net play! Open these ports -

Steamworks P2P Networking and Steam Voice Chat
UDP 3478 (Outbound)
UDP 4379 (Outbound)
UDP 4380 (Outbound)

I had issues playing the game online (constant stuttering, freezing, etc) and now I can play against orange and yellow bars with little to no lag! Try it!

If you are inexperienced with opening ports, simply google the exact model name of your modem (found somewhere on the modem itself) and port forwarding, and you should find an instructional how to.
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Showing 1-15 of 27 comments
n00bdragon Jun 1, 2014 @ 9:54am 
Thanks for finding this.
n00bdragon Jun 1, 2014 @ 10:02am 
Are you sure it's 3478 and not 4378? Just checking.
Wootles Jun 1, 2014 @ 10:03am 
Yes! In fact, just to be safe, here's the webpage with all the ports Steam and Steamworks use just so you can be extra sure.

mrrogers Jun 1, 2014 @ 10:54am 
My problem was always setting up the static IPs on all the computers instead of dhcp
Wootles Jun 1, 2014 @ 11:22am 
Bumping to the top so people with lag issues can see this
Heroxoot Jun 1, 2014 @ 11:36am 
I noticed these ports are not automatically forwarding for me like GFWL ports were so I added them. Thanks.
mmm Jun 1, 2014 @ 11:38am 
Seems to work for me so far.
Wootles Jun 1, 2014 @ 12:23pm 
Back to the top so people can fix their lag
mmm Jun 1, 2014 @ 12:24pm 
Yeah, it works. Thanks dude! This should be stickied.
JunmaX/FT5 Jun 1, 2014 @ 1:01pm 
for me not to change, bad online open ports.
Heroxoot Jun 1, 2014 @ 1:06pm 
It feels like regular crappy online again but I'm still dropping inputs more than it used to.
mmm Jun 1, 2014 @ 1:14pm 
^ Yeah, me too. Makes me think that something got ♥♥♥♥♥♥ up in the game itself.
Last edited by mmm; Jun 1, 2014 @ 1:17pm
Dexaaaa Jun 1, 2014 @ 1:16pm 
there is not technical relation to open ports and game lag .... if there was a port issue you would not even be able to connect.
mmm Jun 1, 2014 @ 1:18pm 
Well there is. I was being dropped out of games all the time, had TERRIBLE lag and stuff. Opened the ports (actually just set myself to DMZ because I'm lazy) and guess what, it works.
Originally posted by Dexaaaa:
there is not technical relation to open ports and game lag .... if there was a port issue you would not even be able to connect.

Came here to say exactly this. Also, outgoing... If you need to forward OUTGOING ports, you already know about it. If you aren't absolutely certain you need to, it is not required (not even for technical reasons, if you need to do it you will KNOW you need to).
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Date Posted: Jun 1, 2014 @ 9:53am
Posts: 27