I had an update that was going to add 1.2 gb of music, like 40 new songs... But then when the game loaded, it took 36 seconds! I need to find a load on the fly solution.
This whole DOTS/ECS thing that unlocks all your cores, 10-1000x performance is great... But it added about 10 months to the dev process at least and is still slow going... Definitely glad I did it, but MMO could have been out last March.
And HDRP while making great graphics is a huge headache and lowers FPS by 1/3.
All these things are investments in the future and I think the right decisions except HDRP... The estimations on release are skewed because of these new techs, but rest assured, I work on this each day. 4 hrs or so or more.