Hi
I have very similar problems with my Fanatec CSW 2.5 steering wheel. And similar problems with games.
Assetto Corsa(the game I play most of the time) crashes and stutter.
Once I have unplugged my K55 the problems disappeared.
Other guys in "Assetto Corsa Italia" facebook group have the same problems with this keyboard.
I'm very disappointed..I have a full Corsair rig(Case,memory,PSU,AIO,headset) and now I have to use a cheap chinese keyboard that works flawlessy instead of an expensive Corsair RGB keyboard.
Please Corsair help us to solve this problems.
TIA