Premiere Pro long launch time for BCC plugins

Why does Premiere Pro take so long to load the BCC / Sapphire / Mocha bundle plugins every time the program is launched? Are there any system tricks or tweaks to speed up the launch time?

There is an extra long lag the first time Premiere finds updated plugins since it caches info about them on the initial scan which it then uses to optimize the load time on subsequent launches. That is all handled by the Adobe host itself, not by the plugins. There is not much you can do to change the launch time beyond that other than making sure the plugins are installed on a fast SSD drive.