Some specific questions about using the APM2 with Windows

So I'm having a hard time understanding what the APM2 would do for me. I am fully in the Apple ecosystem except for my gaming PC. My questions concern that PC.

I am looking for ANC headphones that filter out low-level noises such as computer fans. But at the same time I want to be able to have a conversation or at least notice when someone talks to me.

* The APM2 seem to do that with Adaptive Audio. But the website also says that this only works when they're connected to an Apple device with certain OSes. Does that feature really depend on the OS of the connected device?

* I am planning to use the headphones wired (USB-C) to get good latency for gaming. Again the website is confusing me, it says that this works only for "compatible content, services, and apps" [translated from German]. Will I be able to get low-latency, high-quality audio under Windows?