I'm evaluating LyX for a major project and am mightily impressed. However, there is one problem that stands out: Scrolling the main LyX window is excruciatingly slow. I'm using LyX 2.0.2 and OS X 10.6.8. It doesn't seem to matter how I scroll--two-finger swipe on MacBook Pro trackpad or using the thumb bar or clicking on the normal scrolling arrows. When scrolling rather fast or using the two-finger "ballistic scrolling", there are large jumps between screen updates; sometimes the jump is more than an entire screenful so there is little hope of reliably spotting things as they go by. While scrolling, processor usage goes to 100%
The problem seems to be (just guessing here) that text rendering is slowing things down, as if screen drawing is not being buffered. If I make the window narrower, things seem to improve a little, also if there is a part of the document that has less text because of graphics or white space. Also, making the text larger seems to help--again, pointing to problems rendering text Enabling "pixmap cache" helps a little but it makes the on-screen fonts hard to read because it does away with sub-pixel antialiasing, which I hate. I'm actually kind of distressed about this because of the prospect of spending months writing in LyX, and I'm surprised that this problem exists as prominently as it does. Is there a work-around? I've tried a few different fonts but that doesn't seem to help. Thanks, Jerry
