Computer keyboard lag?

[LSwarley]

in theory makes sense since u can do that with a monitor ^^ and ive experienced that diff buttons diff react o.o like im usin w,a,s,d and j,k,l works fine but if i chnge to u,i,o it doesnt reacts ._. is there a "best" combination? and no its not my keyboards fault ^^ i used 2 diff computer and few laptops and same outcome