On Tue, Jan 3, 2012 at 5:08 PM, Jerry <[email protected]> wrote: > > On Jan 3, 2012, at 4:51 PM, Steve Litt wrote: > > > On Monday, January 02, 2012 10:12:47 PM Jerry wrote: > >> 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% > >> > > Hmmm. I suspect that the problem is worse on my machine because even > scrolling small amounts (a few lines or a couple of pages) is so > laggy/jumpy that it is easily noticeable/annoying--hard to track features > as they go by. > > Scrolling large distances in a short time pretty much takes place as fast > as scrolling a native application; it's just that to get the job done in > roughly the same amount of time, there are huge jumps. > > In an earlier post in this thread I noted that 2.0.1 was much better in > this regard (I just tried 2.0.1 a couple hours ago), so at least in part, > this is looks like a recent development. > > Jerry
FWIW, I have been noticing this issue on my Mac as well with LyX 2.0.2 (binary installation) and Mac OSX 10.7.2. It has occurred for me with small documents as well as large ones. Mouse-scrolling lags substantially. I just tried it on another Mac system running OSX 10.6.8 and LyX 2.0.0. No problems there. I then updated to LyX 2.0.2 on 10.6.8 and there were no problems with that either. So it appears that this issue is unique to LyX on OSX 10.7.x? James
