I'm running on a 56k dial-up here (yes, Virginia, some of us still do), and had no problem running these worlds. However, I was the only one in there so this is not a very good test. For those who want a low-cost/no-cost approach to building 3D chat worlds, ABNet is a good place to start and may prove to be a commercial survivor. The site describes the software thusly:
ABNet is a communication framework that happens to let you create 3D multi-user chat worlds. It isn't limited to this application but 3D chat shows its flexibility. The communication framework of ABNet provides an asynchronous low-latency publish and subscribe environment using XML messages.
ABNet can be used to build your own chat site that uses very little bandwidth. It is feasible to run a 3D chat site from your personal computer.
The software supports both the Contact 6.1 and MediaMachines browsers.
Some useful URLS:
Setup the Software
Download the current ABNet 2 ActiveX client from here:
Download both the client and java server from here: