https://www.bleepingcomputer.com/news/hardware/new-amd-drivers-enhance-windows-10-on-5600m-macbook-pros/

Earlier this month, AMD's Radeon Pro 5600M debuted in Apple MacBook Pro, which is part of AMD's Navi 12 silicon and it adheres to a 50W total graphics power rating. The Radeon Pro 5600M has 8GB HBM2 video memory and Apple says new 5600M is up to 75-percent faster.

On June 29, AMD published new Boot Camp drivers for the MacBook Pro with Radeon 5600M. These new drivers released by AMD can be used in Boot Camp when booting into Windows 10 on the new MacBook Pro.