Laggy Netplay on New Super Mario Bros. Wii

[SergioJames]

I have tried with new versions, but nothing resolve the laggy netplay.

Now i have :

1) Port-forwarded my router (So my gf connects to my IP directly now)
2) Played one lucky game, (Synced until the castle)
3) Played other Games (GC and Wii with GC controller) They works fine (no desync)
Tested games : Mario Kart Wii, Super Smash Bros. Brawl, The Sims 2 (GC), Super Smash Bros. Melee
4) with every new versions i download i create a portable.txt version, I configure the Emulator, then i send it to my Gf zipped.

version : New Super Mario Bros USA (same version,same md5)

There's a specific version of Dolphin i can try? (of course with Wiimote netplay support)