NewDrop :
RCFProd :
I needed to actually enable Freesync in my monitor OSD before it could display 75Hz.
Thing is, VGA doesn't even support Freesync. You need to use a different cable. For me Freesync works through HDMI.
I'm using nvidia gpu
Doesn't matter actually. You can still enable freesync mode on your monitor's osd and on some monitors that enables 75Hz. The freesync mode on your monitor just allows freesync to be used, however doesn't mean you need a freesync GPU to make it work.