With the latest image the FastTable are disabled by default.
You can find the older images easily with Pharo Launcher but I do not remember the exact number. Try before 50133 or something like that, then you could file out Nautilus package et merge it on your latest image. But I do not know what will happen, maybe there is a little bit more to do.
Franck
From: chisvasileandrei@gmail.com
Date: Wed, 22 Jul 2015 10:09:51 +0200
To: pharo-dev@lists.pharo.org
Subject: Re: [Pharo-dev] Disabling Rubric in Nautilus
That performance problem might be due to FastTable.
Try disabling it: Nautilus useExperimentalFastTable: false
Andrei