I've finally got windows 10 working and booting in fedora 23 with GPU passthrough only problem now is I get very low fps in any game. Let's take for example GTA 5 I kept my settings for GTA 5 that I used previously on windows that I know are good settings giving me decent fps as I've used the settings before. So it's not the settings being too high that's causing this. I give the VM all but one of my 8 cores checking for a CPU performance problem and still the fps was very low. Also another thing in GTA 5 if I go to settings it says I only have 512MB of vram when I have 3GB. Also if I open AMD catalyst control center it doesn't show my card there however if I disable then reenable the driver/card from device manager in windows then GTA 5 and AMD catalyst control center both recognize the card but doing this causing artefacts. I'm using latest AMD BETA drivers from there site. [Host] OS: Fedora 23 CPU: FX-8350 MOBO: GA-990FXA-UD3 <a href="http://www.gigabyte.com/products/product-page.aspx?pid=4672#ov">http://www.gigabyte.com/products/product-page.aspx?pid=4672#ov</a> GPU: R9 280 x2 (passing only one card to the vm using the other card on host) RAM: 16GB [Vm] OS: Windows 10 CPU: host-passthrough GPU: Second R9 280 Ram: 8GB Type: UEFI, BIOS (I've tried both it doesn't seem to make a deference)