The OSD didn't work for me at all... in any game, DX 9, 10, or 11, on-screen or on the logitech display. I'm glad there's some kind of progress on the Logitech display feature front, but the font is locked at what appears to be 16pt font so on the entire display all that shows is a single line of info in great big letters. And the k-boost/ov pop-up panel was still kinda sketchy, but that could be b/c my "SC" cards can't use those (if only I'd waited another month to drop $900 on them I coulda had a pair of full featured dual bios Classifieds for less.... but I digress.)
And so back to v4.21 I go. On the bright side, v4.21 continues to work like a charm. With all due respect, get it together, evga. Graphics is kinda your whole schtick, if you can't get the software & hardware to play nice together that's not very encouraging for the rest of us and kinda makes one wonder just what the heck is going on over there. :\