The AMD bootcamp drivers are not up to date with the current industry standards. Currently MS Flight Sim 2024 requires Shader model 6.7 minimum. AMD has updated the Windows driver to support industry standards. Apple should do the same.
Mac Pro, macOS 15.3
it's not apple that makes the amd driver, amd do so on apples request
some uses this one and claim it's better BootCampDrivers.com: Turbo-charged AMD graphics drivers for Mac BootCamp users.
otherwise you can reach out to apple and have them request amd to make a newer driver for bootcamp
but viewing how non of the current macs they sell support bootcamp at all and non use amd gpus and they never supported windows 11, it may not be a priority
And or
Contact - Official Apple Support
And or
Contact - How to Contact Us - Apple
amd bootcamp driver update to support shader model 6.7
