Yeah, great job for the Playcanvas team and the contributors !
Is it possible to have an explanation of the different features ? I cannot see an explanation for Shadow cascades in the documentation (Shadows | Learn PlayCanvas) or for clustered shadows.
I have developed a game with your engine, and have a little performance bottleneck for a night mode i added ([SOLVED] Rectangle light source - #28 by yaustar). May be clustered shadows could be a solution.