[slipwalker]

i am running the Catalina 10.15.1 both on a Macbook pro retina 13 inch early 2015 and an iMac Retina 4K 21.5 inch 2017. For java/kotlin/angular/node/typescript/flutter development and system admin tasks.

Both run a lot better than Mojave ever did.

[thijsvandien]

In what way? I only just upgraded to Mojave from Sierra, and consider it now usable enough, even though there are still obvious, stupid bugs. I would be surprised if Catalina had fewer of those already.

[slipwalker]

Mojave security "enhancements" kept the imac's I/O ( even with a SSD ) crawling, with the beachball hanging even on the most trivial I/O operations.