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I tested play_basic 3 thread and, if you set the design to bypass, audio streams without interruption even down to 500MHz. This suggests that the lib_Awe data path is not the issue. I think it is more related to CPU loading for the DSP involved with the standard example.
It is still worth profiling the above code however.
I have profiled the code and the call to data_to_and_from_awe(output_data, input_data, c_children); for a three thread system with block_size=32 is about 112 ticks or about 1.12 microseconds. Given we have 20.8 microseconds to play with per frame I don't think this function is causing any issues
Note: I tried 5 thread and got similar numbers.
Likely relates to
lib_awe/lib_awe/src/awe_data_path.c
Line 102 in ddb6a39
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