[eluser]WanWizard[/eluser]
How do you load your Schedule class?
Because CI's objects are attached to that according to your dump(). In the class itself (is that all code?) I don't see any reference to CI's classes, and it also doesn't extend anything.
Why your code doesn't work? I don't know. The presence of CI's objects don't slow things down. No error messages? Nothing in the logs?