I just installed Bela image, v0.2.0b_stable, 15 December 2016 and I'm playing a bit with SuperCollider. I'm using the install that comes with the image.
I'm wondering if you all are having sclang consistently using between 80 and 90% of the CPU? This is without anything other than the initial setup and setting it to run at 44.1kHz.
I assume its just waiting for network packets?
Queuing up a bunch of synths don't seem to change the cpu usage all that much though.. so maybe its nothing to worry about.