My suspicion is that Apple's macos drivers are optimized and the drivers that apple includes for windows are not. I've long had trouble running windows on a mac. Nothing major, but enough to be an annoyance and what became clear fairly quickly is the lack of support and attention to boot camp drivers. I get it, Apple wants mac users to stay in the ecosystem, they really won't make too much money if you start using windows, even on a mac. Why make windows more enticing and the expense of their services.
As far as graphics are concerned, that’s been far from my experience. The Windows versions of games have always performed far better in Boot Camp than the equivalent Mac version. I mentioned it because the benchmark result was so unusual and entirely unexpected. For a long time Apple neglected graphics (OpenGL support anyone?). Maybe with Metal things are starting to change and the software gap is shrinking.
For specific Apple hardware like the trackpad, Touch Bar or True Tone, sure: Apple doesn’t bother to make the experience as good in Windows. Far from it. But it’s still not bad and is very useable. Also, the graphics drivers are essentially made by AMD and are just distributed by Apple; and even cynical me doesn’t think they go out of their way to cripple them.
What they are guilty of is not letting AMD distribute the Mac drivers (for some reason) or distribute more frequent updates themselves. It’s entirely possible there are bugs that AMD have since fixed, or it’s a problem with the benchmark itself. Whether the drivers from BootCampDrivers.com improve things I don’t know. I did notice that the 1080p benchmark only occupied a portion of the screen, which was a problem many reported in certain games before it got fixed with the bootcampdriver.com updates. There could be any number of things going on to explain this discrepancy, but I do think it’s an exception.
I might try another benchmark. Any suggestions?