This bug is not present in the inkscape-trunk-gtk3 ppa
Something added recently to the 0.91 inkscape-trunk ppa has made this issue a lot worse: https://bugs.launchpad.net/inkscape/+bug/1571192
Confirmed: hiding the toolars and dialogs speed it back up to (almost) what it was in 0.91 (non-developer)
This bug is not present in the inkscape-trunk-gtk3 ppa
Something added recently to the 0.91 inkscape-trunk ppa has made this issue a lot worse: https:/ /bugs.launchpad .net/inkscape/ +bug/1571192
Confirmed: hiding the toolars and dialogs speed it back up to (almost) what it was in 0.91 (non-developer)