running cal.com locally performance is unusable.

[ilyador]

I have 2020 14" macbook pro, and the performance of running cal.com locally using yarn dx is simply unusable.
It takes about 5 minutes to open any new route.
Hot reload also takes a few minutes for every change.
CPU is constantly at about 100% and the main processes hogging it are next-router-worker (1.4gb memory at times) and node. Docker seems to use very little CPU or memory.
No other process is using over 5% CPU during that, and I quit almost all other apps.
I wanted to work on some issues, but it's just impossible.
Anu ideas why?