When I make a webrtc call into 3500 on my freeswitch server, mod_ladspa is reporting the number of samples as 1920 (20 ms stereo interleaved I assume) fine for a few seconds, and then the number of samples drops to 960 (20 ms mono) Any idea why this might be happening?

Also, I have been assuming that stereo in freeswitch is interleaved - is that the case? Is that assumption incorrect? If not interleaved, how does fs handle stereo.