¿Cómo puedo optimizar los resultados de Nightwatch VRT, porque muestra las mismas cosas varias veces como esta?

 √ Element <//*[@id="width"]> was visible after 22 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 36 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 50 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 43 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 55 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 54 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. √ Element <//*[@id="width"]> was visible after 44 milliseconds. √ Passed [ok]: The screenshot for selector <//*[@id="width"]> was captured successfully. × VRT complete in 5000ms - expected "true" but got .........

Algunas ideas ?