Q. I keep desyncing (my match ends early/doesn't match what my foe sees/foe KO's themselves a bunch)! How do I avoid this?
A. There is a bug found in the current patch causing some desyncs and strange behavior (such as the camera not following correctly and players dying multiple times at once, etc) - it's simple to avoid but having one player affected by it will mess the room up for everyone else. To avoid being affected by this bug personally, just stay still in the waiting room. If a match starts while you're attacking, it will bug out, so standing still eliminates this possibility. Also, if the host quits a game and you get kicked to the main menu, I would suggest reopening SSF2 just to be safe.
An update will be coming to address this soon.
Q: I keep getting stuck in the Waiting Room!
A: This means that RTMFP (the technology that SSF2 uses to connect you to opponents) doesn't work with your network's current settings. This is probably going to be super annoying, but if this network is yours, you have to do some router tweaking to get it working.
We're pretty new in the field, so we'll let the dev of the popular RTMFP game "Haxball" explain it best and offer some solutions for you. Just as a warning; this is some advanced stuff we're dealing with here, so if you're not computer savvy, you might want to have someone else that you trust do this for you.
Check out the "I can't connect to any rooms! It gets stuck at the "Connecting to host" phase." question in their FAQ.Pulled these from the MGN FAQ. These might help.
_________________this post is an enigma. a dream.