AMD Graphics Card
before i has a 290x and my monitor connected in displayport is detected in 144HZ in 2560.
But since i have my vega my monitor reach 100hz max in monitor propiety of windows (freesync ok). (i can choice 60 or 100 only)
i have tested with clean install 17.8.2 and 17.9.1 its same.
And replace my displayport on differents port, its same.
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