i'd rather they optimise the DX11 client even more before giving us DX12 because there are still people with crashing issues on dx11 if you head over to the tech support forum and i personally know a few people who occasionally crash and usually they play on DX11 + borderless windowed when it happens

i hope stormblood gives better optimisation for windows 10 64bit and dx11 (given that they're upping the sysreqs and stuff)