Antonyms of adj high-performance

1 sense of high-performance

Sense 1
high-performance -- (modified to give superior performance; "a high-performance car")

INDIRECT (VIA superior) -> inferior -- (of low or inferior quality)

Similarity of adj high-performance

1 sense of high-performance

Sense 1
high-performance -- (modified to give superior performance; "a high-performance car")
       => superior (vs. inferior) -- (of high or superior quality or performance; "superior wisdom derived from experience"; "superior math students")