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.
@jungbas, after some initial debugging we asked the VIDVOX folks about it, and it turns out the problem needs to be fixed in VDMX instead of Vuo. David Lublin of VIDVOX offered to send you a build when they're ready for testing. If you'd like, I can put you in touch with him, or you can email email@example.com and mention this bug report.
The "Send MIDI Notes" example composition outputs to the first available MIDI device, which may or may not be the one you want. You should check what the first available device is on your system and make sure it's configured to send to Garageband or Mainstage.
To send MIDI to another app, you need to:
open macOS's Audio MIDI Setup app
open the MIDI Studio panel
open the IAC Driver panel
check the "Device is online" box
click the plus to create a port
select that port as Vuo's output and as an input in Garageband and Mainstage
It really depends on your hardware and what all processing of the image is being done in Vuo and VDMX. In some situations, it's true that images with power-of-two dimensions are processed faster. I would recommend making a comparison on your own system — load different versions of a Vuo composition in VDMX, one using 16:9 images and the other using power-of-two images — and see if you notice a difference.