Auria 1.06 submitted to Apple, and includes Audiobus support!
Hot off the presses of Wavelab's Auria forum...
"We've submitted 1.06 to Apple for approval, and this update will now include Audiobus support.
Auria will support both Audiobus input and output modes simultaneously. The available outputs are Main L/R, all the subgroups, and Aux1&2. Auria will also support multiple inputs from Audiobus apps. These are selectable in the input matrix. You'll see a new mode selector on the right side of the input matrix, which allows you to choose between displaying regular inputs and Audiobus inputs. Once you assign an audiobus input to a track, just record enable that track and record the normal way.
We've done extensive testing of Audiobus, and it works well. But we've found that using Audiobus in Auria can reduce the available CPU dramatically. Mainly this is because the Audiobus developers have decided that all apps must use a buffer size of 256 when using Audiobus. Auria normally uses a much higher buffer size when in playback mode, so reducing the buffer to 256 increases the CPU usage quite a bit. We've talked with them about allowing an optional higher latency mode, so we'll see if they decide to implement that in a future version. Also, running other audio apps decreases the amount of CPU left for Auria's use as well. Memory usage can also be a consideration.
So when using Audiobus with Auria, we highly recommend creating a new project, with limited effects, and doing your Audiobus recording into that project. For recording into existing projects, freezing tracks can help to reduce the CPU and memory usage, and allow Audiobus to run more effectively.