Here more numbers, with this setup: MSVC8 Qt 4.1.2 release lyx-qt4 release -O2 AMD XP 1.1Ghz, 100 Mhz Ram
Page down-key scrolling time of the User's Guide: 55s but when I disable all functions of QLPainter (just returning immediately) I still get 25s So optimizing the text drawing functions couldn't more than doubling the speed. Does anybody has an idea why it is still so slow when all QLPainter functions are disabled? Is it still a Qt4 problem, maybe because of the scrolling, or is it a lyx-core "problem". A profiler would be very useful now, could valgrind be used for profiling? Peter
