Help getting ATI hd5450 on High Sierra OpenCore

Trying to repurpose an old PC, Dell XPS8300. I got High Sierra 10.13.6 working on it but having trouble getting the AMD Radeon HD5450 to work. I am getting graphics but only at low resolutions. Should I be adding kexts? What should I be using for my boot args? Anything else I'm missing?

Thanks in advance.

submitted by /u/oracle911
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