I have also noticed the same problems. Particularly I have had this problem when vehicles were involved in the scenario. However, things have worked relatively successfully while playing infantry only scenarios. There is some lag, but nothing that totally ruins the game.
The main problems I have encountered are the following:
1. Units don't respond to orders for several minutes.
2. Reinforcement vehicles are invisible.
3. When a vehicle moves it leaves its passengers behind. They just float in mid-air like they're still sitting inside the vehicle.
These problems have only appeared on the guest side, and are most pronounced when vehicles are involved. I have been able to play Al Huqf Engagement and Bravo Company Assault on Ba Bado v2 successfully and without much lag. Both my opponent and I were running version 1.05 and playing over the internet. We both have ADSL connections and tried turning off our firewalls completely.
I'd really like to experience the smooth multiplayer that other people seem to be experiencing. I hope we can figure out what the problem is.
Thanks,
John