Hi,
Is this HDMI from the board or GFX card?
Does it work if you connect directly to the motherboard?
IS there a bios update available for the card?
its either a motherboard bios or gpu bios issue,have you tested with dvi or vga cable if your monitor has them?
Again it could be bios that's limiting your memory overclock,you could try 10-11-11-28-1t timings with 1.55v dram and 2133mhz
I have this same board and sammy ram. I'm using the latest official bios which A80 but there is a slightly newer beta in the msi forum but think it only had one bug fix. Been using the sammy ram at 2133mhz for quite a few bios versions now and been stable also in a long mem test.