Yosemite is running smooth as silk on my 2014 MBA.
Ya know, I am starting to see Apples strategy with Yosemite and IOS 8. With Continuity, Handoff, and iCloud Drive, the user moves pretty effortlessly from one interface to another.....desktop, laptop, tablet, phone. So, rather than trying to get one device and OS to do everything and be everything for everyone, Apple optimizes the experience for each form factor (e.g Tablets optimized for touch, and Laptops optimize with gestures and trackpads) and then makes the transitions seamless between devices.
Now, I understand that this is not everyones idea of optimization, but I get their strategy. If you are all-in with the Apple ecosystem and devices (which aren't cheap), it is pretty slick.
That's bizarre. My MBA 11" has 2 GB ram and 64 GB disk and runs buttery smooth using the operations you mentioned. Works the same buttery way on MBA 13".No. It is NOT smooth and stable as Mavericks !!
When moving windows especially the Safari windows and when opining a new folders/pages there are a clear jerk/lag in animations.
For me Mavericks runs a lot better and believe it or not I prefer the look of it a lot more than this new OS made for kids!!
and by the way I have the most expensive late 2013 MBP.
That's what i'm thinking now because in my situation I did a direct upgrade from Mavericks not a clean install. I think I will try a clean install and see what will change. the problem is I have massive files and programs installed and will have to configure them all again with their settings.That's bizarre. My MBA 11" has 2 GB ram and 64 GB disk and runs buttery smooth using the operations you mentioned. Works the same buttery way on MBA 13".
Maybe a clean install is necessary?