Dont know if this helps as I had the issue on my mac computer.
If your ASANA is super slow in loading projects etc, try TURNING OFF DARK MODE on your mac - Maybe also remove and dar k mode apps in chrome!!! – Just turning DARK MODE of in MAC Pro setting fixed this slow issue immeadiatley
I was having this issue for 2 +years - and looked and looked for solutions.
I just turned off Macbook Pro Dark Mode in the Settings and it is now super fast, hallelujah. I hope it lasts.
I truly hope it helps as ASANA is an amazing tool and kills productivity when its slow.