Giving 5s to your preferred candidates and 1s to your disliked candidates is not necessarily a problem, as others have pointed out, that's just approval voting

Giving 5s to your preferred candidates and 1s to your disliked candidates is not necessarily a problem, as others have pointed out, that's just approval voting and a good technique in its own right. If you want to avoid that, the runoff at the end of a STAR (Score Then Automatic Runoff) is explicitly designed to incentivize voters to provide more differentiation between candidates.