Regardless of the ‘destination’ (CC, CV, etc.), you can store 1 data point each clock tick.
At 192ppqn (192 ticks per quarter note), you’re looking at a sampling time of 2.6ms at 120BPM, so about 384Hz sampling frequency, which according the Nyquist Sampling Theorem means a maximum frequency of 192Hz can be captured.
TL;DR: It goes easily in audio-rate territory. Also, it’s 16bit CV I/O