I have Asus R558UQ-1105DM with configuration of i7-7500u with Intel HD Graphics 620 as integrated and GTX 940M graphic cards.
My laptop has only HDMI 1.4 port(no DP) and display LG 29UM69 has also HDMI 1.4 only.
In Intel 620 when I am adding 2560x1080 with 60Hz, its showing "The custom resolution exceeds the maximum bandwidth".
I haven't bought it yet cause I am not sure will it work or not and in lot of threads people are complaining about same and nobody is able to provide a solution. Even if it works will it be able to provide good performance i.e. 60HZ refresh rate and 2560x1080p resolution.