Presumably the 0.3s latency is dominated by the internet latency and the bandwidth taken up by the video signal (unless its a completely different frequency). For the purposes of running a local connection Id expect latency to be a few milliseconds, especially if the machine isnt tied up with trying to run Windows as well. (Linux isnt all that well suited either, although theres a bit more control and there are pseudo RTOS variants - Im tempted to see if BeOS has any WiFi drivers).

Trying to run a video signal back the other way (especially if something is playing with inter-frame compression, which is inherently laggy) is bound to cause havoc!

A commendable effort (Id seen the posts before), but its practicality or lack thereof isnt indicative of the result of using the same technology locally.

Ignoring for a minute the question of whether its a good idea, is there any technical reason this shouldnt be considered?

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Fluppet