We brought Marco in to help explain the TIMELINE update within DAX Studio. This can help you understand performance a bit deeper when optimizing your DAX and models. This is one to watch!
DAX Studio
https://daxstudio.org
Marco Russo
https://www.linkedin.com/in/sqlbi/
https://sqlbi.com
Optimizing DAX Video Course
https://www.sqlbi.com/p/optimizing-dax-video-course/