Hi Javier,
In addition to Rob's comment about CE benefitting from the threaded kernel, specifically on your platform, the CIPC service task ran on engine 0 in pre-15.7. With the new kernel, it runs as a separate thread like the other OS platforms for ASE CE. You should see a benefit here.
You mentioned, "But now I have this problems with QA enviroment." Please open a new thread for this problem (if you haven't already) so we can assist.
Regards,
Mark Kusma