It's very hard to say but the rubberbanding I experience is not consistent. When I experience it, it usually lasts anything from a few seconds up to a few minutes, then everything is fine until the next time it happens.
It could have been a coincidence that there were creatures and bodies around...
On the other hand it could be an issue that you guys won't see because you're getting less packet bottlenecks generally.
It would make sense to me that the creature movement/entity packets only bottleneck (causing rubberbanding) on certain connections with naturally higher packet loss, like WiFi.
Edit: Also I understand that I may get less lag if using a wired connection, but considering the "casual gamer" I've been assuming you guys want to know how it performs on non-optimal connections. I haven't played any MMOs (post-beta) on this same setup and experienced rubberbanding on the scale I do in boundless. I do seem to get less rubberbanding on a wired connection but I don't want to trail the cable across the room every time I play boundless, I don't need to do this in other MMOs as I said.