=== obs-studio-0001: push_audio_tree() and push_audio_tree2() use da_find(audio->render_order, ===
N=100   k=100  : defective=0.088ms  fixed=0.004ms  speedup=24.9x
N=500   k=500  : defective=2.231ms  fixed=0.020ms  speedup=109.5x
N=1000  k=1000 : defective=8.755ms  fixed=0.045ms  speedup=192.9x
N=2000  k=2000 : defective=35.353ms  fixed=0.096ms  speedup=366.5x

