Hello everyone, I am currently on a 3600 + 5700 XT setup. I had MBR before, so I had to switch it to GPT via some partition tool and fix windows boot via recovery tools. After that, I could enable BAR and boot with no problem. GPU-Z shows it enabled, I see large memory in device manager but my memory still seems 256MB in advanced tab of GPU-Z. I also get no difference SAM enabled or disabled in games like Horizon 4 or RDR 2. Do you have any idea why my memory still shows 256MB while it also says SAM enabled? Update: It look right in GPU-Z with an older driver. RDR 2 shows half vram but there is a good increase in fps. However, Horizon 4 is messed up. It becomes unplayable, with 15 fps average.