Well in my case my aim definitely gets worse with higher eDPI.
I find that 2400 eDPI is what works best for me when I use Hanzo, Ashe or Ana, higher eDPI up to 3000 for others is definitely the maximum I can handle before my aim and tracking get worse (I don’t play Rein or Brig).
My question is if it would be better for some reason to have like:
Game sensitivity: 6
Mouse dpi: 400
eDPI: 2400
Than my actual:
Game sensitivity: 3
Mouse dpi: 800
eDPI: 2400