Your question is interesting.
Based on the statistics obtained, we note that refusal rates are less related to the language of the individual than to the language of use in their country of origin. As to whether this causes additional delays, the question would have to be put directly to the IRCC.
In any case, we see in all cases a bias related to country of origin as well as an impact on the refusal rate of applications that involve CEGEP studies. The refusal rate is problematic for our entire network, which includes not only French-language CEGEPs, but also some English-language CEGEPs. That said, the refusal rate is slightly more problematic for French-language CEGEPs.