OS X "performance" - scrolling fluidity


I am using latest version of IntelliJ on OS X.
The hardware is, while not cutting edge, still ok (Core 2 Duo, 4 GB RAM) and the overall performance of the OS is fully satifying.
And yet, in IntelliJ, it is not that it is slow (though just accessing the menus could be faster... it is on other software), but especially things such as scrolling lacks the fluidity it can have on other programs that scroll through text.
I mean, when going back and forth with the wheel, it "feels" like there is a small delay and that after some back-and-forth, I seem to be able to "be ahead" to what the display shows.
It feels better when reducing the scroll speed un system prefs but still... This is not that much of a handicap as much as it makes you feel your machine is slow whereas it really is not so much.
The same actions performed on a Windows with worse hardware works perfectly.
I had thought it was that "momentum" feature in Mac scrolling that was doing it ... but disabling does not make things any better.

Has any of you encountered this, and is there a way around it?

Thank you.


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Hi Helter,

Please provide corresponding CPU snapshot.


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For what it's worth, I have the same hardware (MacBook 2Ghz core 2 duo, 4 gigs ram, 1067mhz FSB, about 4 years old I think) and scrolling as fast as I can up and down a long class doesn't have any noticeable lag for me. CPU usage does jump to around 65-70% on both cores when I do it, but it handles it just fine.

Do you have a lot of background stuff running?


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