Nah. Playing online with Viper is challenging, but it's fun.
The hardest part about her combos are the IAD j.HS. Everything else can be done if you're used to the lag. Now, her neutral game... I can't count how many times my Burn Kick feints have failed because of the lag... Or my Rapid Seismos. Viper Ball is just not legal to try.
I have fun with her though, so yeah. --- http://megidoladyne.webs.com <- Shin Megami Tensei news ^^ http://www.backloggery.com/dragard
Never once seen a viper online pull off anything other then basic stuff. lol
I've played Gottnoskill online and he does Viper Balls, FADC tricks, staircase air to air confirms, etc just fine. Personally though, my online Viper stops at box dash combos, even Seismo spam gets messed up for me and I just Seismo -> superjump most of the time.
Aside from practicing in lag like crazy, I'd advise you to work on her footsy game. EX Seismo and cr.M all damn day with basic BK feints for mixup. --- http://www.youtube.com/watch?v=_au-qancp_4&feature=related GT-EXjohn