fix test4 with browserless.io + performance measurement
fix test4 with browserless.io + performance measurement

ecamp/ecamp3,usu/ecamp3,usu/ecamp3,usu/ecamp3,ecamp/ecamp3,pmattmann/ecamp3,pmattmann/ecamp3,pmattmann/ecamp3,usu/ecamp3,ecamp/ecamp3,pmattmann/ecamp3,ecamp/ecamp3