As one of Vuo's developers, I work on Vuo's engine (the thing that makes compositions run), work on nodes, and write documentation. You'll see me on the forums answering people's questions about Vuo.
I enjoy using Vuo to make live music visuals. My hope for Vuo is that it will grow into a community of people of diverse backgrounds and identities making lots of different artistic, useful, unique, goofy, beautiful, crafty, wonderful compositions.
Estoy practicando para ser competente en español. Si publicas en el foro en español, trataré de responder en la misma manera.
Rather than possibly stepping on Tom's toes by making this an official Vuo feature, how about if we help you get your version working, mic? It should be possible :) Could you post your composition and we'll see why it's not performing well?
Your best bet would be to create an Image Filter composition, export as FxPlug, and do your conversion within Final Cut Pro X. The image filter will neither skip frames (unlike Save Frames to Movie when set to drop events) nor potentially exhaust your GPU memory if processing each frame takes a long time (unlike Save Frames to Movie when set to enqueue events). FCPX should preserve the audio track.