Personally I use Windows LTSB inside VMWare Workstation since its resource usage is so low and all of windows 10 functionality is there. VMWare Workstation does not allow GPU passthrough but it seems irrelevant, you'd need ESXI for that. Otherwise its pretty damn smooth, i even casually raid on some of my bots when I feel like actually playing WoW and it gets very solid FPS. There are certain instances where not allocating enough resources to the virtual machine can cause wow to "disconnect" due to low ram/video ram and I do not know the solution to this other than to restart the machine and/or use the relogger app.