Quote - I was wondering that if like PSP with too many filters/plugins the large amount of content could be slowing down the program?

Yep, it does affect the speed of the program.

Here is a post I made that covers some options on organization. My personal favourite is multiple external runtimes.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2715607&page=1#message_3088030

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi