Best sources for optimizing bubble performance?

I have build a huge ERP in vanilla bubble. It is working very well, automated a lot of business processes as well as handles O2C flow to the fullest.

But the biggest issue comes with big dashboards/views that this program uses. It has repeating groups with nested elements that work not as fast as I would expect.

Name all the sources you guys and girls use to learn how to improve bubble performance.
I am using this PDF: The Ultimate Guide to Bubble Performance - revision 3 and it helped me with some challenges, but would like to know more.

What else is out there? :mag: