I have MSI 1080Ti Gaming X... that should be in higher end... but I still get less than 700Sols

And you are wrong... i also have some Gigabyte 1080Ti - and they do mine little bit less, but only because they have lover clock by default... if I OC them so they have the same MHz... they mine the same, and have same stability an power usage... they get a bit more hot 4-5 degrees Celsius (but that's because MSI have better heat sink)

So is anybody willing to share their Ahterburner settings for mining Equicash?