No, it's turned off. Den sön 10 mars 2019 kl 15:55 skrev Paul A. Rubin <parubi...@gmail.com>:
> On 3/10/19 8:31 AM, David Belius wrote: > > > > Den sön 10 mars 2019 kl 01:11 skrev Paul A. Rubin <parubi...@gmail.com>: > >> On 3/9/19 2:59 AM, David Belius wrote: >> >> Den lör 9 mars 2019 kl 00:19 skrev Scott Kostyshak <skost...@lyx.org>: >> >>> On Fri, Mar 08, 2019 at 08:47:34PM +0100, David Belius wrote: >>> > Hi, >>> > >>> > Recently Lyx has been sluggish when typing equations and scrolling in >>> > moderately sized documents, to the point that it becomes very >>> frustrating. >>> > Is this known to be an issue with current versions? I am using a fresh >>> > install of Lyx 2.3.2-2 on an up-to-date version of Windows 10 (Version >>> > 1809). On Lyx 2.3.2 (2018-12-20) on Ubuntu 18.04.2 LTS on a much older >>> > computer editing same document is very snappy. >>> >>> I'm not sure I have seen such a report. It is hard to know how to >>> diagnose the problem. When you see the sluggishness, are you by chance >>> working on a file that is in a Dropbox folder and you have automatic >>> save set to a high frequency? That's just a random guess. We have seen >>> some problems from users with both Windows and Dropbox. >>> >> >> >> Indeed the file is in a dropbox folder. But "Look&Feel->Document >> Handling->Backup documents every X minutes" is set to 5, which doesn't seem >> bery high frequency, and the problem persists even if I edit a copy of the >> document I placed in a non-dropbox folder. >> >> If you open the Windows Task Manager and then start editing a document in >> LyX, does the Task Manager show either high CPU utilization or high disk >> utilization for anything? >> > > When I type into an equation CPU usage hits about 50%, split evenly > between Lyx and a process called "Usermode Font Driver Host". I googled the > latter and found some references to it in connection with possibly similar > problems ( > https://forum.affinity.serif.com/index.php?/topic/51268-usermode-font-driver-host-freezes-computer/). > I tried the "clean boot" mentioned in that discussion but it didn't change > anything. > > Incidently on Ubuntu the CPU usage for lyx in "top" hits ca 30% when I > type into an equation in the same document at the same speed, but there is > no additional process that sees increased CPU usage and lyx remains > responsive while typing, unlike on windows. > > You don't by any chance have instant preview turned on, do you? > > Paul > >
