Rx590 and high sierra compatibility ?

Hello guys, So i just built my gaming system,and need to do some dev work in xcode.I tried installing hackintosh.

My system is. : Ryzen 2600 Rx590 sapphire nitro+

So,i tried installing mojave but had problems about randomseed couldnt boot it up. Then i tried the unofficial image of highsierrav3,it installed i followed all steps. When i try to boot it shows black screen.Ati injector is selected,and id of my card is already in configs.

So what should i do to pass blackscreen,is mojave a must ?

Thanks.