Any change you could uninstall shadowplay and try the game? or try with normal keyboard? Corsair seems cause a lot of issues... random usb disconnects etc.
Oups, I fuck up every thing in my last coment :x I was doing something else XD That's what i'm saying, in FPS game it's okey but in R3E does not want to responce with the keyboard. and AMS also does that but worst. does not want to start XD Windows say that is a USB problem, contact Corsair, they tell me to do some stuff on the bios and other but nothing change. And I hope too, I know that the devs are quit slow to fix some thing but I still enjoy their works
https://www.google.fi/amp/s/www.windowscentral.com/how-prevent-windows-10-turning-usb-devices?amp Check this too