Why won't Windows drivers install on UTM on my MacBook Pro M4?

I’m running Windows 11 ARM in UTM on a MacBook Pro with the M4 chip. I installed UTM drivers, but most of them don’t seem to work — Device Manager still shows lots of Unknown devices, and only the Red Hat VirtIO GPU DOD shows under Display Adapters (see screenshot). I also tried the VirtIO drivers (from the official ISO) - same result. I'd be grateful for any advice on how to fix drivers for Windows in UTM?