domain.setTickLabelsVisible(false) kills real-time?

[JavaGuy]

I'm new to JFreeChart, but in the last few days have found it very useful for my needs. Kudos to the developers.

I am doing a group of (vertical) strip charts. Everything works failry well but the real-time (which I am working on). I have 11 strip charts, and am currently updating only 6 of them (testing). I have done some timing analysis and found that when I hide the vertical tick labels (the time stamp in this case) the timing goes from 13 seconds to 15 seconds. I expected the opposite.

My first thought was the library is doing something odd to hide these. My second thought is that the graphical area is a little larger now, so the graphics processing will require more of the CPU. What are your thoughts?

[paradoxoff]

I would recommend some real debugging and see in which method the time is spent.
Without seeing at least some code, everything else would just be a wild guess.