It's quite simple...
1) change bitrate for AUDIO and for VIDEO
2) change resolution for VIDEO (i think it's impossible)
so my stream is lighter...
For Solo2 there is a plugin that does it... but, obviously, Solo2 has a dual core cpu that does it, i think...
ps. now i use VLC to restream my a/v to external p2p destination... but sometimes a/v is corrupted and stream is blocked, need to stop/start vlc-server and restart it...