How can you test a web app in a Windows 10 touch screen environment? (browserstack and sauselabs don't work)

I'm trying to test a website using Windows 10's touchscreen gestures. We don't actually have a Windows 10 device with a touchscreen, but www.browserstack.com and www.saucelabs.com/‎ do not have this option.

What's the right way to test via Windows 10 touchscreen, short of actually buying a Windows 10 device with a touchscreen?