There’s three types of security check. 1st one is normal and usually done by csis, 2nd is comprehensive, done both by cbsa and csis (all tr to pr pending files are usually in this category), 3rd check is usually done for files like refugees category.Why CBSA and CSIS are taking sooooo much time for background check for Tr to PR applicants, the process is very fast and quick for CEC/Express entry..
We all are most probably in comprehensive security check, because maybe we all pending applicants maybe travelled in between the process or maybe it depends on the mood of security agencies to allocate these files under this security check.