34WK95U Blurry macOS on 3440x1440

Anyone using latest LG Ultrawide 5K2K monitor? Mine connected thru DP to RX580 on macOS Mojave and I am facing some incompatibilaties regarding monitor resolution

2560x1080 HiDPI nice and clean

3440x1440 is blured and unexceptable

https://i.redd.it/0zylxasd5sb21.png