Regarding performance, pipelining $[$ Select $]["$hurts$",$ "improves", "not impact"$]$ throughput and $[$ Select $]["$hurts$",$ "not impact", "improves"$]$ latency.

Compared to single$-$cycle processors, pipelined processors have $[$ Select $]["$higher$",$ "lower", "maybe higher or lower"$]$ CPI and $[$ Select $]["$hard to tell", "better", "worse"$]$ performance.