Adaptive feedback cancellation problem

Hey,

I have been using a Tympan REV F and I tried to implement Adaptive Feedback Cancelation using the examples from the tympan library, but when I upload it to tympan I get this message repeatedly “AudioFeedbackCancelNFXLMS_F32: falling behind? in_block = 116830, ring block = 65096” - the in_block keeps increasing and the ring block almost always stays the same.

In the code I have implemented 8 band WDRC and noise reduction + this (started with the WDRC_8BandFIR_Stereo example). I know that mixing WDRC and AFC can be tricky, but I don’t even have it activated when I’m getting these error messages, it’s immediately after I upload the code. Btw, my CPU usage is at 41,7%, so I know that this isn’t a “ran out of time” problem.

Any ideas?

Thanks!