Nothing I like but low kickback.
When your cutters get shaved back from filing, and the rakers taken down, those $#@!g bumps on the connecting links will be the rakers. Try filing those safety bumps down.
I run my chains until I break a cutter off. But I take care of rakers in meantime. Those safety chains will stop cutting when safety bumps are bigger than rakers.
My chains cut great until I break off a cutter from wear.
If a saw newbie, use the safety chain first. Learn to use saw..........