Adding to my initial post,
I used the feature selector already to disable the RSS feed, Book Trader (don't need - use API), Alarms and many other items.
Despite, I got the task manager screenshot I embedded into my post.
What I think is problematic, is that this new build gets so really slow after opening / closing / re-opening some of the modules (e.g. Option Trader). It is mainly due to Java overhead and (badly working) garbage collecting process, but more features will cause more problems, I'm sure.
After all, the last thing I wanted to achieve, is people at IB (and others) getting bothered because of these issues on Good Friday, so let me apologize for the obviously bad time.