Clearly I'm totally behind here but after a bit of googling, found this awesome site for information. Just wondered if you would agree or have something else to say?
I'm thinking I would rather stick at 1366 x 768 for cms design rather than go big with 1920 as don't really see the point to be honest unless I've got a very big screen
The data is based on below only for desktop resolutions, between January 2018 - April 2019.
gs.statcounter.com/screen-resolution-stats/deskto…

Gabor
developer
Let's forget the screen size! Set your breakpoints by your content. What you really need to check is the ppi. Different devices with different ppi (retina?!) will show your content very differently at the same resolution.