Honestly, I really don't think we expected it to fill up like it did. We just wanted to throw on a fun and popular map to keep things interesting and get a feel for how the server handles. Looks like it worked better than we hoped.
But I agree, since we aren't able to have an auto map change yet, (hopefully that will be fixed ASAP.) we need to keep to the larger maps with a 64 player cap. I highly doubt this will be an issue going forward as again, we didn't expect things to go quite so well less than an hour after putting the server on the list.
I did notice some rubberbanding as well once the load got over 40 players or so, but it wasn't a consistant lag. That map is crazy with all the Helio's, flack and missles so I can see how it would play a part, but it is something that bears watching.
Thanks for the feedback and keep it coming!