Mike Acton's talk "Data-Oriented Design and C++" from CppCon 2014 is the best programming talk ever given in my opinion. A must watch:
He previously was also leading the charge on Unity DOTS, though unfortunately it seems Unity is having a tailspin at the moment. The work on DOTS is solid, if incomplete.
For those reading, check the video out if you want to get a gist how to world-class performance is implemented.
Most of my career has been writing web apps and this talk showed me 'why would someone use C?'