I have an issue with Mainstage latency.
I run an Alesis IO trigger and M-Audio Fast Track Pro with USB to Macbook Pro
(2.4 Ghz Core i5 Dual-Core, 8GB memory, 256GB flash drive, 13,3")
I also have a 25key controller connected to Fast Track Pro MIDI in.
The project consists of 9 patches with backing tracks and half of the songs have ES2 synth or EXS24 sampler and one song has Ultrabeat that is triggered by Alesis IO trigger. No third party plugins are used.
Everithyng works fine about half an hour. Then i get a noticeable latency with the Ultrabeat (Triggered by Alesis IO trigger). At the same time the MIDI keyboard connected to the Fast Track Pro MIDI input works fine with no latency. When i restart Mainstage then everything works fine again until about 30 min.
What could be the issue? Two USB devices connected directly to Macbook Pro should not be a problem, or is it?