This metabug tracks regressions introduced in this range of commits: https://cgit.freedesktop.org/libreoffice/core/log/?qt=range&q=c7bdee8dbd1cf260a8513a0d31b36f90daa70f1c..4c99a427ee4adaeddb2682c192384bad21d9d09b
All of them being slownesses working with large data
Kohei: I think to remember you don't want to be put in cc anymore for LO bugs but since it concerns mdds in peculiar, thought you might be interested in this meta bug.
If I'm wrong, sorry for the noise and don't hesitate to uncc yourself of course.
All child bugs are fixed, marking this as resolved. :-)