yeah i am sing amd, so if i leave the hdmi adapter in the card even unconnected to a monitor and then try accessing it from teamviewer it won't shit the bed and drop to 0mh/s?
That's it.
For new series like RX one dummy video output in one rig, it's enough, or straight to which card that troubled.
For old series like R9 family, sometimes need a few dummy video output.