Well said, Neona.
It boils down to preference and requirements.
Both will do the job. LabView is easier if you are familiar with it. Quicker to learn if you don't have a strong C/C++ background. Performance wise, CVI may be better, but there are other influences as well, such as speed of PC, etc.
Define the requirements. Look at the timing constraints (if any) and follow Neona's suggestion.
Personally, I tend to choose LabView over CVI because I can quickly create a VI or modify an existing one to do what I need to implement. But that is a personal preference...
😄
-JLV-