After a clean install of 16.04, I have a strange problem with Libreoffice impress. When working on a presentation, even without any media in it, it will freeze for minutes on end taking 100% CPU (soffice.bin process) and then come back.
I can reproduce it with another user, but the same presentation opens fine in Impress 5.1 on Ubuntu 14.04.
Any ideas on how to find the cause? Anyone else seeing this?