Kumara

I'm having a problem for a while, my mouse and keyboard have a kind of delay and input lag, I've tried everything and nothing resolves, I suspect my source, because it has some kernel errors, what do you think? Thanks. My Config: GIGABYTE AB350M DS3H CPU RYZEN 5 1600 2X 8GB HYPERX 3000MHZ...

I want to buy Redragon Kumara K552 keyboard, but I don't want it to have ABS keycaps or at least not one that feel sandy on surface, so if anyone can help me if there is a version that doesn't have sandy surface on keycaps.