XPS 9560 is a 2017 based laptop but it can handle Thunderbolt 3 related task on par or even better than some of its successor. Here im gaming using EGPU setup with GTX 1080 Ti using the latest Nvidia Setting.
Here Metro being running on Ultra Setting with 1920 x 1200. Will try 4k soon since my laptop support up to 4k Display. Other than Metro, all smooth gaming using Thunderbolt 3 setup.
My Words on Thunderbolt 3 Egpu gaming? Its the new way of gaming with even basic laptop configuration as long as you have Thunderbolt 3 Port you good to go.
Its my first time, so sorry for unprofessional way of taking video.