Can't get good quality audio/video.

I'm creating a video chat application, and no matter what combination of Camera/Microphone/NetStream properties and functions I use, I cannot get high quality video/audio. I get occasional audio latency, pixelated video, occasional frozen video and the degree of each depends on the combination of properties/functions I set/call.
Others such as TokBox, TinyChat, Chat Roulette, etc. have achieved great video/audio quality with FMS, what is the secret? At least point me in the right direction, because right now I'm not impressed with FMS ability to provide a good video/audio experience.
BTW, I'm using a P2P mesh using a group specifier, not NetStream.DIRECT_CONNECTIONS.
Thanks in advance!

You mention that if Flash Player is used for encoding you cannot achieve very high qaulity as of now, just wondering how else the encoding would happen, as users of this video chat app would be broadcasting via their web cams. In that case does FP handle the encoding, and what else are my options other than FP?
I think we are using FMS in its default configuration after installation (we use the Amazon Web Services FMS).
How can I "disable aggregate messages or totally disable the queues on the FMS that reduce latency, especially for live video chat applications". I'm very interested in hearing more about that.
Typically there will be up to 8-12 people in the group video chat room, with video pod size of about 147x110 px.
We are using Speex for audio currently.
Hoping more info might move us forward.
Thanks very much.

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