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My impulse response (in the %FS view) looks to be much as expected, although the graph tails off after just 50ms, rather than, say, 500ms in the documented examples. Should that concern me?
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To me, it looks like you don't have sufficient signal above the noise (-30dB) to produce normal looking results.
You're dBFS plot looks like it should, given the horizontal scale you've chosen.
With your response graph, your scale is being kind to you. Change it to a more realistic vertical of 45dB-105dB. You could also turn on smoothing to get a better look at it.
brucek