The new image size seems huge and your eyes have to concentrate on more pixels – the bigger amount of visual information is unfamiliar for your eyes and your brain.
Imagine playing Counter-Strike for several years with a pretty small 4:3 resolution – you will feel quite uncomfortable after the switch to native 1080p.
During the shift to CS:GO they decided to keep the old gameplay feeling and stay with the same amount of visual information to make the transition easier for them. Why are so many professional players using 4:3?Ī big number of professional players is used to play with 4:3 resolutions from earlier Counter-Strike versions.