I'm an engineer at Asana. Trust me, they're full aware that performance is the #1 problem with Asana right now.

The major engineering focus at Asana right now is performance. It has been for a while and they're just starting to roll things out with the new, faster, backend and UI. I think you'll start to see significant improvements soon as the investments they've been making start to roll out. It's already started rolling out to some customers, and the API updates just got turned[1], on for example. Those changes are going to be making it into the UI soon.

If you don't like Asana performance, give it a few months and check back or keep an eye on their blog[2]. Big changes are coming on that front.

[1] https://asana.com/developers/feed/asana-fast-api-open-beta [2] https://blog.asana.com/