Graphics stuck on 1920x2160

[zzmattiazz]

Hi everyone!
I've had hackintosh from 2015 and it worked all perfectly...now I've bought a new 4k monitor instead of a normal FHD but when I try to choose the right resolution mac os gives me only two option: 1920x1080 or 1920x2160 which is a really strange resolution. Can someone help me please?
My pc:
Intel 4570
Intel HD 4600 graphics
8gb ram

4k at 60hz is fully supported (i've tried with linux and windows with display port).

Do i need to downgrade to mojave or i can keep catalina? Thank you very much

 

[arturoteide]

Hello, did you get to solve the problem? The same happens to me, I also have an Intel graphics card

 

[zzmattiazz]

Hello, did you get to solve the problem? The same happens to me, I also have an Intel graphics card

Yes, I solved it with -cdfon tag.
It run smoothly...hope you're gonna solve the problem like me