Since 2.0, Dusk ships with "Chrome headless" (https://developers.google.com/web/updates/2017/04/headless-chrome). "headless" means it does not open the browser-window and you can't see what Dusk is doing.
This improves the performance of your Test Suite a lot. You could override the driver-method in your DuskTestCase to remove the --headless-option like so :
protected function driver()
{
$options = (new ChromeOptions)->addArguments([
'--disable-gpu'
]);
return RemoteWebDriver::create(
'http://localhost:9515', DesiredCapabilities::chrome()->setCapability(
ChromeOptions::CAPABILITY, $options
)
);
}
Source: https://github.com/laravel/dusk/blob/2.0/stubs/DuskTestCase.stub#L34