How good is it in practice? I've found windows VMs under a Linux host to be frustrating to use, and get poor performances no matter how much resources I throw at it. The clock keeps getting messed up all the time. UI is sluggish.

I now use a dedicated windows laptop in RDP and it is such a better experience better than a VM.

> UI is sluggish

You absolutely need to pass through a GPU so that DWM.exe is properly accelerated; otherwise, it falls back to the software-accelerated WARP and the performance tanks to ~15 FPS.

It doesn't need to be anything powerful; if you have an idle integrated card that you aren't using on the Linux host because you only interact with it through a Web server or SSH (for instance, Proxmox), then pass that through. It's what I do on my home lab which runs a 9950X.

Before people raise pitchforks against Linux, this applies there, too, for the record: at work I have a Linux instance just to myself that by any other metric is ridiculously powerful: 64-core Epyc, 96 GB memory, but no iGPU, so remote desktop works very poorly.

It's pretty good. They use XfreeRDP to remote into the container and display individual windows. This somehow performs a lot better than the GPU emulations of VirtualBox or VMware. I guess Microsoft put some effort into optimizing RDP for Terminal Server applications.