Libre Office 3.5 is out. I need to look at it. My big beef with Open Office all along was that it made current hardware, whatever it was, feel like Office 97 running on a 486. Or perhaps a Pentium-75.
They’re saying all the right things now. Lots of new eyes looking at the code, reviewing the code, dropping obsolete code, streamlining it and making general improvements. Netscape 4.5 was a bloated mess too, but once the Mozilla team got some fresh eyes looking at it, the situation improved. Eventually they had to break the browser out into what became Firefox, but they had the freedom to do that.
And in the meantime, I suppose if it’s too slow, you could throw hardware at the problem. 8 GB of RAM costs $40 or less right now. Carve out a ramdisk of 1-2 GB and install Libre Office in that, and it’ll load pretty fast. It’ll eliminate any I/O-bound bottlenecks.