>>3768300exactly, and 1:1 at 1080 is still too big.
I always used to scale it down a few notches. Now I just scale the entire browser.
/usr/bin/google-chrome-stable --force-device-scale-factor=0.75 %U
It's not a pixel peeping site. People who browse it at 4K should just scale the site up a little, The images are about their subject's general look, not about their details.