Only able to use openGL

right click rpcs3.exe and select the one that says something about running with a graphical processor and then the one who says High performance NVIDIA GPU.
Try running vulkaninfo on your system to see if it's working (vulkaninfo in the run box).
It should output something like http://image.prntscr.com/image/50ad76720...a8ba1f.png

im on a desktop so there definitely should not be an internal graphics thing going on here. it should be using my nvidia gpu and i even went into nvidia control panel and changed around some settings to try and force it. right clicking rpcs3.exe gives quite a few options, but none of them are related to the gpu and there was nothing under properties.

i ran vulkaninfo and it did spit out something similar to yours so im pretty sure its set up correctly http://image.prntscr.com/image/aa471719e...7405b1.png

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for future reference, i was able to resolve the issue by installing the latest vulkan SDK (software development kit)

it seems like just having driver support isn't enough at the moment. hopefully as rpcs3 keeps developing, the need for the SDK will be dropped and it can be download and play like other emulators