My HDMI cable is 2.0 and everything should be 1440p ready (every drivers are installed) on a fresh Windows 10).
My screen is an Iiyama pl2779q (always used at 1440p before).
I join my "System Support Utility" TXT file.
Thank you very much for your answer.
I suggest you talk to your motherboard manufacturer. They are responsible for the level of support provided by the HDMI connector provided on your motherboard.
Thanks for your answer.
They certified me that the motherboard was 4K 60fps ready.
That's really weird... i tried everything. Even tried an other HDMI cable (one i use everyday at 4K).
I re-installed Windows... nothing better.
It's exactly like if my sceen wasn't able to do more than 1080p.
Ok, i understand now.
I always used that screen with DisplayPort but no DisplayPort on this motherboard.
And i just learn that, my screen is 1080p only with HDMI *_* and 1440p with DVI and DisplayPort.
Thank you for you answer, have a good day.