Argh! Bug in version 0.9-11! "Performance mode" wasn't really "performance mode"! Will post a new version in a bit. Benson has suggested a way to lock the processor to the highest speed.

EDIT: When really running in performance mode, OpenOffice only takes 1 minute 10 seconds, instead of 1 minute 40 seconds. Wow. Running the test a second time shaves 20 more seconds off, bringing the start time to 50 seconds. Nice.