I'm using LibreOffice 126.96.36.199 in Ubuntu 16.04, and the program is considerably slower than in e.g. Windows 8.1 and Debian 8.
This shows up in particular when I change the zoom level in larger documents below 200%. Above 200% (e.g. from 200% to 220% etc.), zooming in and out happens absolutely smooth -- the program needs no time for the change. But e.g. from 160% to 180%, zooming causes the program to get extremely laggy: Everything freezes, and sometimes also the whole program surface turns grey/black -- sometimes for some seconds, sometimes "permanently".
This does not happen when the edited document is relativley small; that is, when there are no objects, images etc. in it, but only text, or when the document is only a few pages long.
I have an extensive document (50+ pages) with many arrows, tables, and also some pictures, and the problems mentioned occur when I open it in Ubuntu 16.04. But they don't occur when I edit the same document in Debian 8 and Windows 8.1.
What I've tried already
I already changed certain properties, since I searched quite a bit for possible solutions.
For example, I turned off Java and Open CL, and provided considerably more memory for LibreOffice. But all of this improved the situation hardly noticeably -- if at all...
...which is not really surprising, since in Windows 8.1 and Debian, LO ran smoothly without making these changes.
Does anyone know whether this is an Ubuntu-specific problem, or simply why that occurs?
Could it have something to do with the fact that I'm not using the pre-installed version from Ubuntu Xenial? (I switched to the above mentioned version, since 5.1.x seemed to be even more unstable than 5.0.5 already was. (sudden crashes after simple commands))