Le 10/03/2019 à 19:00, Paul A. Rubin a écrit :
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.
Other than that, the only thing I could think of would be some sort of
issue with the screen font. You mentioned issues when typing math and
scrolling through documents. If the scrolling issues occur only in
documents containing math (or other "interesting" glyphs), and not in
plain text documents, you might try changing your screen fonts to
something "Windows-standard" (if they are not already so) and see if
that mitigates the issue.
Indeed, the affinity forum suggest that the problem was a font after
all. It would make sense to change the default screen font to something
standard if it is not the case already.
If we were able to reproduce, we could try to do something about it, but
currently I am a bit dry.
JMarc
