I watched it twice and have no idea what it’s supposed to be showing me.
Totally unscientific - but I know the feeling my late 2009 MacMini with 4Gb crawled with Mavericks - to the point that I upgrade to 8Gb of RAM, and ended up going back to 10.6.8…
Is there any good reason to “upgrade” to Yosemite? All I’ve heard is bad. From slow downs to problems running software.
The new interface isn’t that great, but I’m sure I’d get used to it.