OSD Toggling not working


(sorry for my English)
I noticed bug with hotkey for toggle osd(RTSS) in-game.
in The Witcher 3 - Wild Hunt and also in Project C.A.R.S this function is not working (well in W3 sometimes it work in main menu, but later in-game not at all) 
I tied  set hotkey for just one or combination of keys.
I tested few other games (GTA:V, Diablo 3, World of Warcraft, Counter Strike GO) just to check, and not problem occur.
HWinfo 4.62-2500+RTSS 3.5.99
Windows 7 64Bit 
I'm afraid, those games probably block the hotkeys from other applications somehow.
HWiNFO uses standard Windows hotkeys.