Most people are struggling to even get onto the Online part of the Game, so count yourself lucky that you've got that far.
First of all, the game itself has just released, and many people are seeing lots of bugs, mostly relating to Graphics and the game not even loading for some. As the game itself is using what is meant to be the original code, the experience might be similar to the original game when the game's connection is low. If it's just you and 1 other friend, you might have better luck using Peer-To-Peer (PTP), though that is assuming the modern Version of the game allows that. I haven't looked at the multiplayer, so I don't know for sure. I only looked at where it would be found, and didn't look into settings within it.
If you're local to your friend (living in the same property or next to one another), maybe see if you can link together directly via a Modem (use the same router).
I'm not an expert, so don't be surprised if that isn't helpful in your specific case.
