I had this problem before and it was fixed but not completely. When I play NC update stats in the beginning. After a while it stops. before when it happend I disable/enable NC and it start taking notes again, and after session I reprocess notes and it was updated correctly.
Now when to problem is bigger this happens: It stop taking notes as before but now the "history" disappers, when I reprocess the stats is incorrect.
Last session I took notes my self for RFI-EP. After 3 rounds it stop taking notes with the result 1/3. And that was correct, player was in EP 3 times and raised one time. After total 10 rounds I quit and reprocess hands. Then it was still 1/3, but it should be 1/10 if he only raised once.
I have reset to factory as the guide says but that doesnt help. One thing I notice is that in NC settings is partitions 2 / 3-6 / 7-10 but none of my stats have any partitions settings , only by default I guess (I only play 6max). Can that be the problem?