If you’re not sure what “Offline Updates” means, basically all PackageKit updates are downloaded at once and then applied when you restart. This is more reliable and means that you won’t see any breakage from updating shell elements like the panel or when services get updates etc.
There’s been a ton of bug fixes and performance improvements in Gala over the holiday thanks to @GranPC and a branch from @meisenzahl makes AppCenter just blazing fast to startup. Last minute performance improvements let’s goooo 🚀