Here's some reading for you.
Proper chain alignment and tension are critical. The drive and driven sprockets (engine and rear wheel) must be in an absolutely straight line. The tensioner wheel must also align with the chain path. The rear, driven sprocket, must be centered on the rear wheel hub. Any misalignment or out of concentricity will cause you problems.
Roller chains will perform perfectly if properly aligned and tensioned.
The kit supplied chain has a bad reputation but even it will serve you well if properly installed.