Hi again
@jctay ,
@itsab1989 has analysed your logs and it turns out that it is your 192 patch chart that is the problem. The spacers are far too thick compared to the rest of the patch, and thus too many samples (of the 400 samples per second sampling frequency of the i1Pro3) land on the spacer, mistaking spacers for patches. This causes the reading errors you frequently had, which probably was worse when you were sliding slowly. This is the most likely error. Try reducing the spacer thickness to half or a third of what is shown on the images you gave earlier. Else use one of the preset charts, which do not have this issue.
Let us know if this solved the misreading problem...
Cheers,
Knut