[Csnd] OSC receive rates and lamps

Hi

I have a little problem understanding how ksmps affects the receive rates for OSClisten. I am using an IMU sensor operating at 400Hz and sending OSC at the same frequency.

When I am using a ksmps = 64 everything seems to work at the correct rate, but at ksmps = 32 and lower the rate in Csound suddenly drops to about 80Hz.

Why is this happening? And what would the optimal settings be?

I have been testing with different -b and -B settings, but they have not seemed to affect the rate. When testing I have been converting to audio rate with upsamp and writing to sound file with fout.

Best, Andreas